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P2116 Throttle/Pedal Position Sensor "E" Minimum Stop Performance
The P2116 Throttle/Pedal Position Sensor "E" Minimum Stop Performance diagnostic trouble code indicates that the Engine Control Module (ECM/PCM) has detected a problem with the minimum-stop performance of the Throttle/Pedal Position Sensor "E".
In simple terms, the vehicle's computer expects the throttle or accelerator-pedal position system to reach a specific minimum position when the throttle is closed, but the sensor "E" signal does not reach, maintain, or respond within the expected range.
Modern vehicles use Electronic Throttle Control (ETC) instead of a traditional mechanical accelerator cable. These systems typically use multiple position sensors to provide redundant information to the ECM.
When the ECM determines that the "E" sensor channel does not behave correctly at its minimum position, it may store P2116.
Depending on the vehicle, the ECM may also activate:
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Reduced engine power
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Fail-safe mode
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Limp mode
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Limited engine RPM
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Throttle-control warning
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Check Engine Light
P2116 does not automatically mean that the accelerator pedal or throttle body must be replaced. Carbon buildup, throttle-plate binding, incorrect adaptation, wiring faults, connector problems, reference-voltage issues, or a faulty position sensor can all potentially cause this code.
What Does P2116 Mean?
P2116 means the ECM/PCM has detected that Throttle/Pedal Position Sensor "E" is not performing correctly at its minimum stop position.
The code contains three important elements:
Throttle/Pedal Position Sensor
The vehicle uses position sensors to determine accelerator-pedal and/or throttle position.
Sensor "E"
The letter "E" identifies one of the sensor channels used by the vehicle's electronic throttle-control system.
The exact component represented by "E" is manufacturer-specific. On some vehicles it may correspond to a throttle-position sensor channel, while on others it may be associated with an accelerator-pedal position sensor.
Minimum Stop Performance
The ECM expects the sensor to reach a calibrated minimum value when the throttle system is at its minimum or closed position.
If the signal is outside the expected range or does not behave correctly at that point, P2116 may be stored.
What Is a Minimum Stop?
The minimum stop is the calibrated minimum operating position of the throttle system.
It is important to understand that an electronic throttle plate does not necessarily close completely against the throttle bore. A small calibrated opening may be maintained for airflow and idle control.
The ECM knows what position and sensor signal should correspond to this minimum operating point.
If the sensor reports an incorrect value at the minimum position, the ECM may identify a minimum-stop performance problem.
Possible reasons include:
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Carbon buildup
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Throttle plate contamination
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Mechanical binding
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Incorrect throttle adaptation
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Sensor wear
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Sensor electrical failure
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Wiring problems
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Incorrect reference voltage
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Poor sensor ground
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Throttle-body damage
How Does the Electronic Throttle System Work?
A typical electronic throttle system works like this:
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The driver presses or releases the accelerator pedal.
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Accelerator-pedal position sensors detect movement.
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The sensors send redundant signals to the ECM.
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The ECM calculates the requested engine torque.
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The ECM determines the required throttle position.
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An electric actuator motor moves the throttle plate.
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Throttle-position sensors report the actual position.
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The ECM compares the sensor signals with the commanded position.
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The ECM continuously monitors minimum and maximum positions.
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The ECM checks whether the redundant sensor signals remain plausible.
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If the minimum position is not achieved or the sensor response is incorrect, a fault such as P2116 may be stored.
This redundant monitoring is important because electronic throttle control is directly related to engine torque and accelerator response.
Symptoms of P2116
Symptoms vary depending on the vehicle and the severity of the fault.
Check Engine Light
The Check Engine Light may illuminate when P2116 is stored.
Reduced Engine Power
The ECM may deliberately limit engine torque if it cannot reliably determine throttle position.
Limp Mode
The vehicle may enter a fail-safe operating strategy.
Possible restrictions include:
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Engine RPM
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Throttle opening
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Engine torque
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Accelerator response
Poor Throttle Response
The accelerator may feel delayed or may not respond proportionally to pedal movement.
Limited Acceleration
The vehicle may have noticeably reduced acceleration.
Rough Idle
If the throttle does not reach or maintain its expected minimum position, idle quality may become unstable.
High or Unstable Idle
If the throttle plate remains more open than expected, engine airflow may increase and cause an abnormal idle speed.
Engine Stalling
A severe throttle-control problem can contribute to stalling, particularly when the throttle returns toward its minimum position.
Throttle Hesitation
The engine may hesitate when the accelerator is pressed or released.
Engine Surging
Incorrect throttle-position feedback can sometimes contribute to unwanted changes in engine speed.
Cruise Control Deactivation
Cruise control may be disabled because it depends on reliable electronic throttle control.
Electronic Throttle Warning
Some vehicles may display an electronic throttle-control warning.
Reduced Power Message
Some vehicles may display a Reduced Engine Power warning when the ECM activates a fail-safe strategy.
Common Causes of P2116
Dirty Throttle Body
Carbon buildup around the throttle plate can prevent the throttle from reaching its calibrated minimum position.
Deposits commonly accumulate around:
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Throttle plate edges
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Throttle bore
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Throttle shaft
Cleaning may resolve the problem if contamination is the actual cause.
However, cleaning the throttle body should not automatically be treated as the complete repair.
Throttle Plate Binding
The throttle plate may not return smoothly to the minimum position.
Possible causes include:
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Carbon deposits
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Dirt
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Foreign material
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Damaged throttle plate
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Bent shaft
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Internal mechanical wear
Incorrect Throttle Adaptation
Some vehicles require the ECM to learn the throttle body's minimum position.
An adaptation problem may occur after:
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Throttle-body replacement
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Throttle-body cleaning
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Battery disconnection
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ECM replacement
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Software updates
Faulty Throttle Position Sensor
The throttle body may contain multiple position sensors.
If the sensor associated with channel "E" develops:
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Internal wear
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Signal dropout
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Dead spots
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Incorrect output
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Internal electrical failure
the ECM may detect a minimum-stop performance problem.
Faulty Accelerator Pedal Position Sensor
On vehicles where sensor "E" refers to an accelerator-pedal position channel, an internal pedal sensor fault can cause P2116.
This is why the exact vehicle-specific wiring diagram and service information are important.
Damaged Throttle Body
An internal throttle-body problem can involve:
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Position sensors
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Actuator motor
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Gears
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Throttle shaft
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Electronics
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Throttle plate
Damaged Wiring
Inspect the relevant sensor circuit for:
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Broken wires
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Chafing
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Heat damage
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Melted insulation
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Pinched wires
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Vibration damage
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Poor previous repairs
Corroded Connector
Moisture or corrosion can alter sensor voltage and cause an incorrect minimum-position reading.
Look for:
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Green corrosion
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Oxidation
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Water intrusion
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Loose terminals
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Bent pins
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Poor terminal tension
Incorrect 5-Volt Reference
Many throttle and pedal position sensors use a regulated reference voltage.
A reference-circuit problem can affect one or several sensors.
Possible causes include:
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Short to ground
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Short to voltage
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Damaged wiring
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Another sensor affecting the shared reference circuit
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ECM reference-circuit problems
Sensor Ground Problem
A poor sensor ground can alter the voltage signal seen by the ECM.
Possible causes include:
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Corroded ground
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Loose connection
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Broken ground wire
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High resistance
Low System Voltage
A weak battery or unstable electrical supply can interfere with electronic throttle operation.
Charging-System Problem
An alternator or voltage-regulation problem can cause unstable electrical voltage and contribute to throttle-control faults.
Faulty ECM/PCM
An ECM/PCM fault is possible but generally less common than:
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Sensor problems
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Throttle-body problems
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Wiring faults
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Connector faults
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Reference-voltage problems
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Ground problems
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Adaptation issues
The ECM should normally be considered only after the rest of the circuit has been tested.
Vehicles Commonly Affected by P2116
P2116 can occur on many OBD-II vehicles equipped with electronic throttle-control systems.
Examples may include:
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Ford F-150
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Ford Mustang
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Ford Explorer
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Ford Focus
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Ford Escape
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Ford Fusion
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Ford Ranger
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Chevrolet Silverado
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Chevrolet Tahoe
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Chevrolet Camaro
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Chevrolet Malibu
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GMC Sierra
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GMC Yukon
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Cadillac Escalade
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Dodge Charger
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Dodge Challenger
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Ram 1500
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Jeep Grand Cherokee
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Jeep Wrangler
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Chrysler Pacifica
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Toyota Camry
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Toyota Corolla
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Toyota Tundra
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Toyota Tacoma
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Honda Accord
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Honda Civic
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Honda CR-V
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Nissan Altima
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Nissan Pathfinder
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Nissan Titan
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BMW 3 Series
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BMW 5 Series
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Mercedes-Benz C-Class
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Mercedes-Benz E-Class
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Volkswagen Golf
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Volkswagen Passat
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Audi A4
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Audi A6
This list is not exhaustive.
P2116 can occur on any vehicle where the ECM monitors a position channel identified as "E" and detects abnormal minimum-stop performance.
Important: The exact definition of sensor "E", the affected component, minimum-stop threshold, wiring configuration, and diagnostic procedure vary by manufacturer.
How Is P2116 Diagnosed?
P2116 should be diagnosed systematically because the problem can originate from either a mechanical throttle problem or an electrical/sensor problem.
Replacing the throttle body immediately is not always appropriate.
Check for Additional Trouble Codes
Perform a complete diagnostic scan.
Look for related codes such as:
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P2100
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P2101
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P2102
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P2103
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P2110
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P2111
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P2112
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P2117
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P2118
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P2119
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P2120
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P2121
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P2122
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P2123
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P2124
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P2125
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P2116
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P2127
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P2128
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P2129
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P2130
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P2131
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P2132
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P2133
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P2134
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P2135
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P2136
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P2137
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P2138
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P2139
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P2140
Also check for:
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5-volt reference codes
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Accelerator pedal sensor codes
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Throttle-position sensor codes
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Battery-voltage codes
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Communication codes
Additional codes can help identify whether the fault is related to the throttle body, accelerator pedal, wiring, or shared electrical circuits.
Check Freeze-Frame Data
Review the conditions under which P2116 was stored.
Useful parameters include:
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Engine RPM
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Vehicle speed
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Accelerator pedal position
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Commanded throttle position
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Actual throttle position
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Sensor "E" value
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Battery voltage
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Engine coolant temperature
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Engine load
Determine whether the fault occurred:
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At startup
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At idle
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During acceleration
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During deceleration
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When the accelerator was released
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At a specific engine temperature
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During low system voltage
This information can be particularly useful when the fault is intermittent.
Monitor Sensor "E" Live Data
Use a capable diagnostic scan tool to monitor the parameter associated with sensor "E".
Slowly press and release the accelerator pedal while observing the signal.
Look for:
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Smooth signal movement
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Correct minimum value
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Sudden jumps
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Signal dropouts
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Dead spots
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Unstable readings
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Incorrect return-to-minimum behavior
The exact expected values are manufacturer-specific.
Check the Minimum Position
With the accelerator released, compare the reported sensor value with the manufacturer's specified minimum value.
If the sensor does not reach the expected minimum value, investigate:
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Throttle-body position
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Accelerator-pedal position
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Sensor calibration
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Wiring
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Reference voltage
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Ground
Inspect the Throttle Body
Inspect for:
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Carbon deposits
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Dirt
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Foreign material
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Mechanical damage
-
Throttle plate binding
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Damaged gears
If contamination is found, follow the manufacturer's cleaning procedure.
Do not force an electronic throttle plate open if the manufacturer specifically warns against manual movement.
Check Throttle Plate Return
The throttle plate should return consistently to the calibrated minimum position.
If it sticks, returns slowly, or stops at different positions, a mechanical throttle-body problem may be present.
Check Throttle Position Sensor Signals
Where applicable, compare the redundant throttle-position sensor signals.
Look for:
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Dropouts
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Dead spots
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Sudden voltage changes
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Incorrect minimum values
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Correlation errors
A sensor that appears normal through most of its operating range but becomes abnormal near the minimum position is particularly relevant to a minimum-stop performance code.
Check Accelerator Pedal Position Sensors
If the manufacturer's diagnostic information identifies sensor "E" as part of the accelerator pedal, monitor the pedal sensors.
The signals should:
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Start at the correct minimum value.
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Increase smoothly.
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Remain within specification.
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Maintain the required correlation.
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Return correctly when the pedal is released.
Check the 5-Volt Reference
Measure the reference voltage according to the manufacturer's procedure.
If multiple sensors share the reference circuit, check whether other sensors are also affected.
Check Sensor Ground
Perform a sensor-ground test.
Look for:
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High resistance
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Excessive voltage drop
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Corrosion
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Loose connections
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Damaged wiring
Inspect Wiring and Connectors
Inspect the relevant circuit for:
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Broken wires
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Chafing
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Melted insulation
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Corrosion
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Water intrusion
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Loose terminals
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Bent pins
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Backed-out terminals
Perform a Wiggle Test
While monitoring sensor "E" data, carefully move the wiring harness and connector.
If the signal changes unexpectedly, investigate the wiring and connector.
Check Battery and Charging Voltage
Verify:
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Battery condition
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Battery terminals
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Alternator output
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Charging voltage
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Engine grounds
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Chassis grounds
Stable electrical voltage is important for electronic throttle-control operation.
Perform Throttle Adaptation or Relearn
If required by the manufacturer, perform the appropriate throttle adaptation procedure.
This may be necessary after:
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Throttle-body cleaning
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Throttle-body replacement
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Battery disconnection
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ECM replacement
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Related throttle repairs
Do not assume that a generic throttle relearn procedure applies to every vehicle.
Check Technical Service Bulletins
Manufacturer service information may identify known problems involving:
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Minimum-stop calibration
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Position-sensor failures
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Throttle-body contamination
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Wiring defects
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Connector problems
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Software issues
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Adaptation procedures
How to Fix P2116
The correct repair depends on the cause confirmed during diagnosis.
Clean the Throttle Body
If carbon buildup is preventing the throttle plate from reaching the minimum position, clean it according to the manufacturer's procedure.
Perform any required adaptation afterward.
Repair Throttle Plate Binding
If mechanical binding is confirmed, repair or replace the throttle-body assembly as required.
Perform Throttle Adaptation
If the ECM has lost the learned minimum position, perform the correct manufacturer-specific adaptation procedure.
Replace the Faulty Position Sensor
If the sensor is serviceable separately and testing confirms failure, replace it.
On many modern vehicles, the position sensors are integrated into the throttle body or accelerator-pedal assembly.
Replace the Throttle Body
If testing confirms an internal throttle-body fault involving the sensor, actuator, gears, or electronics, replace the throttle-body assembly.
Replace the Accelerator Pedal Assembly
If sensor "E" is part of the accelerator pedal assembly and testing confirms an internal pedal-position sensor failure, the pedal assembly may need replacement.
Repair Damaged Wiring
Repair or replace wiring affected by:
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Heat
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Chafing
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Vibration
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Corrosion
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Pinching
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Previous repairs
Repair or Replace Connectors
Replace damaged terminals or connector housings and restore proper terminal tension.
Repair 5-Volt Reference Problems
If the reference voltage is outside specification, identify and repair the short, open circuit, or other cause before replacing the sensor.
Repair Sensor Ground Problems
Repair loose, corroded, damaged, or high-resistance sensor grounds.
Repair Charging-System Problems
Correct battery, alternator, or charging-system problems if unstable voltage is contributing to the fault.
Update ECM/PCM Software
If manufacturer service information identifies a software/calibration problem, perform the appropriate update.
Replace the ECM/PCM
The ECM/PCM should only be considered after the sensor, throttle body, accelerator pedal, wiring, reference voltage, grounds, power supply, and calibration have been properly tested.
What Happens If P2116 Is Ignored?
P2116 should not be ignored because the affected position sensor is part of the electronic throttle-control safety system.
Possible consequences include:
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Reduced engine power
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Poor throttle response
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Limp mode
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Limited acceleration
-
Rough or unstable idle
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Engine stalling
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Cruise-control deactivation
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Additional throttle-control codes
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Increased emissions
If the ECM cannot reliably determine the minimum throttle position, it may restrict engine torque as a safety measure.
Can You Drive With P2116?
Driving with P2116 depends on the vehicle's symptoms.
A vehicle with a minor or intermittent problem may remain driveable, while another vehicle may immediately enter reduced-power mode.
A short trip may be possible if:
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The engine runs normally.
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Accelerator response is predictable.
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There is no significant loss of power.
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The engine does not stall.
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No serious warning messages are displayed.
Avoid continued driving if there is:
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Sudden loss of acceleration
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Unpredictable throttle response
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Severe hesitation
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Repeated stalling
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Reduced-power mode
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Very limited engine RPM
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Multiple electronic throttle warnings
If accelerator response becomes unpredictable, the vehicle should be inspected promptly.
Is P2116 a Serious Code?
P2116 is generally considered a moderate to high-severity diagnostic trouble code.
The electronic throttle system directly affects engine torque and acceleration, so a minimum-stop performance fault can affect drivability and safety.
The severity is higher if the vehicle:
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Enters limp mode
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Loses significant power
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Stalls
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Has unpredictable accelerator response
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Cannot accelerate normally
If the vehicle suddenly loses throttle response or displays a reduced-power warning, the problem should be treated as high priority.
P2116 vs. Related Throttle and Pedal Codes
| Code | General Description |
|---|---|
| P2116 | Throttle/Pedal Position Sensor "E" Minimum Stop Performance |
| P2117 | Throttle/Pedal Position Sensor "F" Minimum Stop Performance |
| P2118 | Throttle Actuator Control Motor Current Range/Performance |
| P2119 | Throttle Actuator Control Throttle Body Range/Performance |
| P2120 | Throttle/Pedal Position Sensor/Switch "D" Circuit Malfunction |
| P2121 | Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance |
| P2122 | Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input |
| P2123 | Throttle/Pedal Position Sensor/Switch "D" Circuit High Input |
| P2124 | Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent |
| P2125 | Throttle/Pedal Position Sensor/Switch "E" Circuit Malfunction |
| P2126 | Throttle/Pedal Position Sensor/Switch "E" Circuit Range/Performance |
| P2127 | Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input |
| P2128 | Throttle/Pedal Position Sensor/Switch "E" Circuit High Input |
| P2129 | Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent |
| P2130 | Throttle/Pedal Position Sensor/Switch "F" Circuit Malfunction |
| P2131 | Throttle/Pedal Position Sensor/Switch "F" Circuit Range/Performance |
| P2132 | Throttle/Pedal Position Sensor/Switch "F" Circuit Low Input |
| P2133 | Throttle/Pedal Position Sensor/Switch "F" Circuit High Input |
| P2134 | Throttle/Pedal Position Sensor/Switch "F" Circuit Intermittent |
| P2135 | Throttle Position Sensor A/B Voltage Correlation |
The distinction is important:
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P2116 focuses specifically on the minimum-stop performance of sensor "E".
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P2117 focuses specifically on the minimum-stop performance of sensor "F".
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P2118 concerns throttle actuator motor current range/performance.
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P2119 concerns throttle-body range/performance.
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P2125–P2129 concern the "E" throttle/pedal sensor circuit.
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P2130–P2134 concern the "F" throttle/pedal sensor circuit.
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P2135 concerns throttle-position sensor A/B correlation.
If P2116 appears together with P2125–P2129, the combination can provide additional clues about the sensor "E" circuit.
How to Prevent P2116
Recommended practices include:
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Keep the throttle body clean according to manufacturer recommendations.
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Follow the correct procedure when cleaning an electronic throttle body.
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Perform required throttle adaptation after applicable repairs.
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Protect throttle and pedal sensor wiring from heat.
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Prevent wiring from rubbing against metal.
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Keep electrical connectors clean and dry.
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Maintain battery terminals.
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Maintain engine and chassis grounds.
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Maintain the charging system.
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Use correct throttle-body and accelerator-pedal components.
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Avoid poorly installed throttle-control modifications.
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Address Check Engine Light warnings promptly.
Final Thoughts
The P2116 Throttle/Pedal Position Sensor "E" Minimum Stop Performance diagnostic trouble code indicates that the ECM/PCM has detected an abnormal minimum-position condition involving the sensor "E" channel of the electronic throttle/pedal system.
Possible causes include:
-
Dirty throttle body
-
Carbon buildup
-
Throttle plate binding
-
Incorrect throttle adaptation
-
Faulty throttle-position sensor
-
Faulty accelerator-pedal position sensor
-
Damaged throttle body
-
Damaged wiring
-
Corroded or loose connectors
-
Incorrect 5-volt reference
-
Poor sensor ground
-
Low system voltage
-
Charging-system problems
-
Software/calibration issues
-
ECM/PCM faults
The most important point is that P2116 does not automatically mean the throttle body or accelerator pedal must be replaced.
A proper diagnosis should first identify exactly which component and sensor channel the vehicle manufacturer associates with "E". The technician should then verify the sensor's minimum value, inspect the throttle plate and minimum stop, compare live sensor data, check the 5-volt reference and sensor ground, inspect wiring and connectors, verify battery/charging voltage, and perform any required throttle adaptation.
If the vehicle has severe power loss, unpredictable accelerator response, repeated stalling, or reduced-power mode, the fault should be diagnosed promptly because the electronic throttle system is directly involved in engine torque control and vehicle acceleration.
