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P2106 Throttle Actuator Control System - Forced Limited Power
The P2106 Throttle Actuator Control System – Forced Limited Power diagnostic trouble code indicates that the Engine Control Module (ECM/PCM) has intentionally placed the electronic throttle system into a limited-power or fail-safe mode.
In simple terms, P2106 usually does not identify the original problem. Instead, it tells you that the vehicle's computer has detected another fault serious enough to restrict engine power as a protective measure.
Modern vehicles use an Electronic Throttle Control (ETC) system instead of a traditional mechanical accelerator cable. The ECM continuously monitors the accelerator pedal, throttle position sensors, throttle actuator motor, engine operation, and other related systems.
When the ECM determines that normal throttle control cannot be guaranteed, it may deliberately limit engine torque and throttle opening. It can then store P2106.
This is why P2106 is often considered a secondary or consequence code.
The most important diagnostic rule is:
Do not replace the throttle body simply because P2106 is present. Find the code or condition that caused the ECM to force limited power.
Depending on the vehicle, P2106 may be accompanied by:
-
Check Engine Light
-
Reduced Engine Power warning
-
Limp mode
-
Limited engine RPM
-
Poor accelerator response
-
Severe acceleration limitation
-
Throttle hesitation
-
Cruise-control deactivation
-
Electronic throttle warning
What Does P2106 Mean?
P2106 means the ECM/PCM has commanded the Throttle Actuator Control (TAC) system to operate with limited engine power.
The code description contains three important concepts:
Throttle Actuator Control System
The TAC system electronically controls the throttle plate.
It can involve:
-
Accelerator-pedal position sensors
-
Electronic throttle body
-
Throttle actuator motor
-
Throttle-position sensors
-
ECM/PCM
-
Wiring
-
Connectors
-
Power and ground circuits
-
Communication networks
-
Software and calibration
Forced Limited Power
The word "forced" is particularly important.
The ECM has intentionally restricted engine output rather than simply detecting that the engine has low power.
The system may reduce:
-
Throttle opening
-
Engine torque
-
Maximum RPM
-
Accelerator response
This is a protective strategy designed to keep the engine and vehicle controllable when a serious fault is detected.
Is P2106 the Main Problem?
Usually, P2106 is not the root cause.
P2106 often appears because another fault has already caused the ECM to enter a limited-power strategy.
For example:
P2135 Throttle Position Sensor A/B Voltage Correlation
A throttle-position sensor disagreement may cause the ECM to distrust throttle-position information.
The ECM may then limit engine power and store P2106.
Another example:
P2118 Throttle Actuator Control Motor Current Range/Performance
If the ECM detects abnormal throttle-motor operation, it may restrict throttle operation and store P2106 as a consequence.
Other possible trigger codes include:
-
P2100
-
P2101
-
P2102
-
P2103
-
P2104
-
P2105
-
P2107
-
P2108
-
P2109
-
P2110
-
P2111
-
P2112
-
P2113
-
P2114
-
P2115
-
P2116
-
P2117
-
P2118
-
P2119
-
P2120–P2129
-
P2130–P2140
The exact combination varies by vehicle.
How Does Electronic Throttle Control Work?
A typical electronic throttle-control system operates as follows:
-
The driver presses the accelerator pedal.
-
Accelerator-pedal position sensors detect pedal movement.
-
Redundant pedal signals are sent to the ECM/PCM.
-
The ECM calculates the driver's requested torque.
-
The ECM determines the appropriate throttle opening.
-
The throttle actuator motor moves the throttle plate.
-
Throttle-position sensors report the actual throttle position.
-
The ECM compares commanded and actual throttle position.
-
The ECM continuously checks sensor correlation and actuator operation.
-
If a serious fault is detected, the ECM can enter a fail-safe strategy.
-
Engine torque and throttle operation are deliberately restricted.
-
P2106 may then be stored.
The system is designed with redundancy because electronic throttle control directly affects engine torque and acceleration.
Why Does the ECM Limit Engine Power?
The ECM may restrict engine power when it cannot reliably determine or control throttle position.
Possible reasons include:
-
Throttle-position sensor disagreement
-
Accelerator-pedal sensor disagreement
-
Throttle actuator motor problems
-
Throttle body malfunction
-
Throttle plate stuck open
-
Throttle plate stuck closed
-
Wiring faults
-
5-volt reference problems
-
Low system voltage
-
Module communication problems
-
Processor faults
-
Serious engine-management faults
-
Software/calibration problems
The goal is to prevent an uncontrolled or unpredictable throttle condition.
Symptoms of P2106
The symptoms can be dramatic because the code specifically relates to a forced power-limiting strategy.
Reduced Engine Power
The vehicle may suddenly feel much weaker than normal.
The ECM may deliberately restrict engine torque.
Limp Mode
The vehicle may enter a fail-safe operating mode.
Possible restrictions include:
-
Limited RPM
-
Limited throttle opening
-
Reduced engine torque
-
Slow accelerator response
Poor Accelerator Response
Pressing the accelerator may produce little response.
The pedal can feel as though it has become disconnected from normal engine operation.
Limited Acceleration
The vehicle may accelerate very slowly, particularly under load.
Check Engine Light
The Check Engine Light commonly illuminates.
Reduced Power Warning
Some vehicles may display a message such as:
Reduced Engine Power
or another manufacturer-specific warning.
Electronic Throttle Warning
Some vehicles may illuminate an electronic throttle-control warning.
Engine Hesitation
The engine may hesitate when the accelerator is pressed.
Rough Idle
If the underlying problem affects throttle control, the engine may idle poorly.
Engine Stalling
A severe throttle-control fault can sometimes cause the engine to stall.
Cruise Control Deactivation
Cruise control may be disabled because the system cannot guarantee normal throttle control.
Additional Warning Lights
Depending on the vehicle, other systems may also report faults.
Possible warnings can involve:
-
Traction control
-
Stability control
-
Electronic throttle
-
Engine management
-
Reduced power
Common Causes of P2106
Because P2106 is often a consequence code, there are many possible underlying causes.
Throttle Position Sensor Fault
A disagreement between redundant throttle-position signals can cause the ECM to distrust throttle position.
Possible problems include:
-
Sensor wear
-
Signal dropout
-
Incorrect voltage
-
Erratic signal
-
Sensor correlation error
Accelerator Pedal Position Sensor Fault
The accelerator pedal normally contains multiple position sensors.
If the signals do not agree, the ECM may limit engine power.
Possible causes include:
-
Internal sensor failure
-
Wiring problems
-
Connector damage
-
Signal dropout
-
Incorrect voltage
Faulty Throttle Body
A defective electronic throttle body can cause P2106.
Possible failures include:
-
Internal position sensor failure
-
Actuator motor failure
-
Internal gear damage
-
Electronic circuit failure
-
Throttle plate binding
Throttle Actuator Motor Problem
The actuator motor may fail to move the throttle plate correctly.
Possible causes include:
-
Excessive current
-
Open circuit
-
Short circuit
-
Motor wear
-
Mechanical resistance
-
Internal damage
Throttle Plate Stuck Open or Closed
A throttle plate that cannot reach the commanded position can cause the ECM to activate a protective strategy.
Possible causes include:
-
Carbon buildup
-
Foreign material
-
Mechanical damage
-
Internal gear failure
-
Throttle shaft problems
Dirty Throttle Body
Carbon deposits can interfere with throttle-plate movement.
This may be especially relevant if the throttle body has heavy deposits around the throttle plate.
However, P2106 alone is not proof that cleaning the throttle body will fix the problem.
Wiring Problems
The TAC system contains multiple electrical circuits.
Possible problems include:
-
Broken wires
-
Chafing
-
Melted insulation
-
Heat damage
-
Pinched wiring
-
Short circuits
-
Open circuits
-
Poor previous repairs
Connector Problems
Poor electrical connections can cause intermittent sensor or actuator signals.
Inspect for:
-
Corrosion
-
Water intrusion
-
Loose terminals
-
Bent pins
-
Backed-out terminals
-
Damaged connector housings
5-Volt Reference Problem
Many throttle and pedal sensors depend on a stable 5-volt reference.
A shorted sensor or damaged wiring can pull the reference voltage outside the expected range.
This can produce multiple sensor-related codes at the same time.
Poor Sensor Ground
A poor sensor ground can cause incorrect voltage readings.
Possible causes include:
-
Corrosion
-
Loose ground
-
Damaged wiring
-
High resistance
-
Poor engine or chassis grounding
Low Battery Voltage
Low voltage can cause electronic control modules and sensors to operate incorrectly.
P2106 should therefore be investigated alongside any battery-voltage or charging-system codes.
Charging-System Problem
A failing alternator or voltage regulator can cause unstable electrical voltage.
This may affect:
-
ECM operation
-
Throttle actuator operation
-
Sensor readings
-
Communication systems
TAC Module Processor Fault
A processor or control-module problem can cause the throttle system to enter a protective state.
Related codes may include:
-
P2107
-
P2108
However, module power, ground, communication, and related sensor circuits should be checked before replacing a module.
ECM/PCM Problem
Because some vehicles integrate throttle control directly into the ECM/PCM, an internal ECM/PCM problem is possible.
It should generally be considered only after other causes have been eliminated.
Communication Problem
Some vehicles use CAN communication between different control modules.
Communication problems can cause the throttle system to enter a fail-safe mode.
Possible causes include:
-
CAN-H wiring problems
-
CAN-L wiring problems
-
Short circuits
-
Open circuits
-
Poor connectors
-
Module power loss
-
Module ground problems
Software or Calibration Problem
Incorrect software or calibration can sometimes trigger inappropriate fail-safe operation.
Possible solutions include:
-
Software updates
-
Module reprogramming
-
Calibration updates
-
Manufacturer-specific adaptations
Other Engine-Management Faults
On some vehicles, P2106 may be activated by another serious engine-management problem rather than a defective throttle component.
This is why the complete diagnostic code set is important.
Vehicles Commonly Affected by P2106
P2106 can occur on many vehicles equipped with electronic throttle-control systems.
Examples include:
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Ford F-150
-
Ford Mustang
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Ford Explorer
-
Ford Focus
-
Ford Escape
-
Ford Fusion
-
Ford Ranger
-
Chevrolet Silverado
-
Chevrolet Tahoe
-
Chevrolet Suburban
-
Chevrolet Camaro
-
Chevrolet Malibu
-
GMC Sierra
-
GMC Yukon
-
Cadillac Escalade
-
Dodge Charger
-
Dodge Challenger
-
Ram 1500
-
Jeep Grand Cherokee
-
Jeep Wrangler
-
Chrysler Pacifica
-
Toyota Camry
-
Toyota Corolla
-
Toyota Tundra
-
Toyota Tacoma
-
Honda Accord
-
Honda Civic
-
Honda CR-V
-
Nissan Altima
-
Nissan Pathfinder
-
Nissan Titan
-
BMW 3 Series
-
BMW 5 Series
-
Mercedes-Benz C-Class
-
Mercedes-Benz E-Class
-
Volkswagen Golf
-
Volkswagen Passat
-
Audi A4
-
Audi A6
This list is not exhaustive.
The exact diagnostic meaning and fail-safe strategy can vary according to manufacturer, engine, model year, and throttle-control architecture.
How Is P2106 Diagnosed?
The most important diagnostic principle is:
Find out why the ECM commanded limited power.
Do not begin by replacing the throttle body simply because P2106 is stored.
Step 1: Scan for All Trouble Codes
Perform a complete scan of all relevant modules.
Look for codes involving:
-
Accelerator pedal
-
Throttle position
-
Throttle actuator
-
Throttle motor
-
Minimum-stop performance
-
Maximum-stop performance
-
Sensor correlation
-
5-volt reference
-
Battery voltage
-
Communication
-
Engine misfire
-
Fuel mixture
The other code may be the actual root cause, while P2106 is simply the resulting fail-safe code.
Step 2: Check Freeze-Frame Data
Review the operating conditions when the fault occurred.
Important parameters include:
-
Engine RPM
-
Vehicle speed
-
Accelerator-pedal position
-
Throttle position
-
Commanded throttle position
-
Battery voltage
-
Engine load
-
Engine coolant temperature
Determine whether the fault occurred during:
-
Startup
-
Idle
-
Acceleration
-
Deceleration
-
High RPM
-
High engine load
-
Low voltage
-
A specific temperature condition
Step 3: Compare Accelerator-Pedal Sensors
Monitor all accelerator-pedal sensor channels.
The signals should change smoothly and remain within the manufacturer's specified relationship.
Look for:
-
Sudden voltage changes
-
Dropouts
-
Dead spots
-
Sensor disagreement
-
Incorrect minimum position
-
Incorrect maximum position
Step 4: Compare Throttle-Position Sensors
Monitor the redundant throttle-position signals.
The sensors should follow the throttle position consistently.
Look for:
-
Correlation errors
-
Signal dropout
-
Sudden jumps
-
Incorrect closed-throttle values
-
Incorrect maximum values
Step 5: Compare Commanded and Actual Throttle Position
This is one of the most important tests.
Compare:
Commanded throttle position
with
Actual throttle position
If the ECM commands a particular throttle opening but the throttle does not follow it, investigate:
-
Throttle actuator motor
-
Mechanical binding
-
Throttle body
-
Wiring
-
Position sensors
Step 6: Inspect the Throttle Body
Inspect for:
-
Carbon buildup
-
Dirt
-
Foreign material
-
Mechanical damage
-
Binding
-
Internal gear damage
If cleaning is appropriate, follow the manufacturer's procedure.
Do not force an electronic throttle plate manually if the manufacturer warns against doing so.
Step 7: Test the Throttle Actuator Motor
Where supported, check:
-
Motor resistance
-
Motor current
-
Actuator movement
-
Open circuits
-
Short circuits
Excessive current may indicate mechanical binding or an internal motor problem.
Step 8: Check the Accelerator Pedal
Inspect the pedal assembly and its wiring.
Look for:
-
Damaged wiring
-
Loose connectors
-
Sensor faults
-
Abnormal live-data readings
-
Physical damage
Step 9: Check the 5-Volt Reference
Measure the reference circuit according to manufacturer specifications.
If several sensors share the same 5-volt reference, determine whether another sensor or wiring problem is affecting the circuit.
Step 10: Check Sensor Grounds
Perform a proper ground and voltage-drop test.
Do not rely only on visual inspection.
Step 11: Inspect Wiring and Connectors
Inspect the TAC wiring harness from the throttle body to the ECM/PCM and accelerator pedal.
Look for:
-
Chafing
-
Broken wires
-
Heat damage
-
Melted insulation
-
Corrosion
-
Water intrusion
-
Loose pins
-
Backed-out terminals
Step 12: Perform a Wiggle Test
While monitoring live sensor data, carefully move the relevant wiring harnesses and connectors.
If a sensor signal changes unexpectedly, investigate the wiring or connector.
Step 13: Check Battery and Charging Voltage
Verify:
-
Battery condition
-
Battery terminals
-
Charging voltage
-
Alternator operation
-
Engine grounds
-
Chassis grounds
If P2106 appeared together with low-voltage codes, the electrical system should be investigated before replacing throttle components.
Step 14: Check Module Communication
If applicable, test communication between the ECM/PCM and other control modules.
Check:
-
CAN-H
-
CAN-L
-
Module power
-
Module grounds
-
Communication connectors
-
Related U-codes
Step 15: Check Manufacturer Technical Service Information
Check for:
-
Technical Service Bulletins
-
Software updates
-
Known throttle-body failures
-
Wiring problems
-
Connector issues
-
Calibration updates
-
Required adaptations
Step 16: Perform Throttle Adaptation
After applicable throttle-body service or replacement, perform the required manufacturer-specific adaptation or relearn procedure.
This may be required after:
-
Throttle-body cleaning
-
Throttle-body replacement
-
Accelerator-pedal replacement
-
Battery disconnection
-
ECM replacement
-
Module replacement
How to Fix P2106
There is no single repair for P2106 because the code identifies a forced limited-power condition rather than one specific failed component.
The correct repair depends on the underlying fault.
Repair Accelerator-Pedal Sensor Problems
If testing confirms a defective accelerator-pedal position sensor, replace the affected component or pedal assembly as specified by the manufacturer.
Repair Throttle-Position Sensor Problems
If the throttle-position sensor is integrated into the throttle body and testing confirms failure, the complete throttle-body assembly may need to be replaced.
Repair or Replace the Throttle Body
Replace the throttle body when testing confirms:
-
Internal sensor failure
-
Actuator motor failure
-
Internal electronic failure
-
Mechanical binding
-
Damaged gears
Clean the Throttle Body
If carbon buildup is preventing normal movement, clean the throttle body according to the manufacturer's procedure.
Perform the required adaptation afterward.
Repair Wiring
Repair damaged wires caused by:
-
Chafing
-
Heat
-
Vibration
-
Corrosion
-
Pinching
Repair Connectors
Replace damaged terminals or connector housings and restore proper terminal tension.
Repair 5-Volt Reference Problems
If a sensor or wiring fault is affecting the reference circuit, repair the circuit or replace the confirmed faulty component.
Repair Ground Problems
Correct:
-
Corroded grounds
-
Loose grounds
-
High-resistance connections
-
Damaged ground wires
Repair Battery or Charging Problems
Correct:
-
Weak battery
-
Loose battery connections
-
Alternator problems
-
Voltage-regulator problems
-
Charging-system faults
Repair CAN Communication Problems
Repair communication wiring, connectors, module power, or other confirmed network faults.
Update or Reprogram the ECM/PCM
If manufacturer service information identifies a software or calibration issue, update or reprogram the relevant module.
Replace the TAC Module
If a dedicated throttle-control module is used and testing confirms an internal failure, replace and program the module according to manufacturer procedures.
Replace the ECM/PCM
ECM/PCM replacement should be considered only after the related circuits, sensors, throttle actuator, power supply, grounds, communication network, and software have been properly tested.
What Happens If P2106 Is Ignored?
P2106 should not be ignored.
Because the ECM has intentionally limited engine power, the vehicle may not respond normally to accelerator input.
Possible consequences include:
-
Poor acceleration
-
Limited engine speed
-
Limp mode
-
Difficulty maintaining highway speed
-
Engine stalling
-
Unpredictable drivability
-
Reduced engine performance
-
Additional warning lights
The most important concern is not the stored code itself but the underlying fault that caused the ECM to activate the limited-power strategy.
Can You Drive With P2106?
Driving with P2106 is generally not recommended until the underlying fault has been diagnosed.
If the vehicle has suddenly entered reduced-power mode, its ability to accelerate may be severely limited.
A short trip to a repair facility may be possible if:
-
Accelerator response remains predictable.
-
The engine runs smoothly.
-
The vehicle can safely maintain the required speed.
-
There is no severe stalling or hesitation.
-
No serious additional warning signs are present.
However, avoid continued driving if there is:
-
Severe loss of power
-
Unpredictable throttle response
-
Repeated stalling
-
Very limited RPM
-
Severe hesitation
-
Electronic throttle warnings
-
Inability to maintain safe traffic speed
If the vehicle cannot accelerate safely, it should be inspected or transported rather than driven.
Is P2106 a Serious Code?
P2106 is generally considered a high-severity diagnostic trouble code.
The reason is that the ECM has already determined that engine power must be deliberately restricted.
The severity is particularly high when the vehicle experiences:
-
Sudden reduced power
-
Limp mode
-
Unpredictable acceleration
-
Stalling
-
Severe throttle hesitation
-
Inability to maintain normal speed
P2106 should therefore be treated differently from a simple emissions-related Check Engine Light.
P2106 vs. Related Throttle Actuator Codes
| Code | General Description |
|---|---|
| P2106 | Throttle Actuator Control System – Forced Limited Power |
| P2107 | Throttle Actuator Control Module Processor |
| P2108 | Throttle Actuator Control Module Performance |
| P2109 | Throttle/Pedal Position Sensor "A" Minimum Stop Performance |
| P2110 | Throttle Actuator Control System Forced Limited RPM |
| P2111 | Throttle Actuator Control System Stuck Open |
| P2112 | Throttle Actuator Control System Stuck Closed |
| P2113 | Throttle/Pedal Position Sensor "B" Minimum Stop Performance |
| P2114 | Throttle/Pedal Position Sensor "C" Minimum Stop Performance |
| P2115 | Throttle/Pedal Position Sensor "D" Minimum Stop Performance |
| 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:
-
P2106 indicates that the ECM has forced the throttle system into a limited-power strategy.
-
P2107 points toward a TAC processor problem.
-
P2108 indicates a TAC module/system performance problem.
-
P2109 concerns minimum-stop performance of throttle/pedal sensor "A".
-
P2110 indicates forced limited RPM, which is a specific RPM-limiting strategy.
-
P2111 indicates the throttle-control system is stuck open.
-
P2112 indicates the throttle-control system is stuck closed.
-
P2113–P2117 concern minimum-stop performance of specific sensor channels.
-
P2118 concerns throttle actuator motor current range/performance.
-
P2119 concerns throttle-body range/performance.
-
P2120–P2124 concern the "D" throttle/pedal sensor circuit.
-
P2125–P2129 concern the "E" throttle/pedal sensor circuit.
-
P2130–P2134 concern the "F" throttle/pedal sensor circuit.
-
P2135 concerns throttle-position sensor A/B voltage correlation.
The most useful diagnostic clue is usually the code stored alongside P2106.
How to Prevent P2106
Because P2106 is generally a consequence of another fault, prevention focuses on maintaining the entire electronic throttle system.
Recommended practices include:
-
Maintain the battery and charging system.
-
Keep battery terminals clean and secure.
-
Maintain engine and chassis grounds.
-
Protect throttle-control wiring from heat.
-
Prevent wiring from rubbing against metal.
-
Keep connectors clean and dry.
-
Follow manufacturer procedures when servicing the throttle body.
-
Perform required throttle adaptations after applicable repairs.
-
Address Check Engine Light warnings promptly.
-
Repair accelerator-pedal sensor problems quickly.
-
Avoid poorly installed electrical modifications.
-
Keep ECM software updated when manufacturer updates are available.
Final Thoughts
The P2106 Throttle Actuator Control System – Forced Limited Power diagnostic trouble code means that the ECM/PCM has deliberately restricted engine power because it has detected a condition that could make normal throttle control unsafe or unreliable.
The critical point is that P2106 usually does not identify the original fault.
Possible underlying problems include:
-
Accelerator-pedal position sensor failure
-
Throttle-position sensor failure
-
Faulty electronic throttle body
-
Throttle actuator motor problems
-
Throttle plate binding
-
Dirty throttle body
-
Damaged wiring
-
Corroded connectors
-
5-volt reference problems
-
Sensor-ground problems
-
Low battery voltage
-
Charging-system problems
-
TAC processor faults
-
ECM/PCM problems
-
CAN communication faults
-
Software or calibration problems
-
Other serious engine-management faults
A proper diagnosis should therefore begin with a complete scan for additional trouble codes and freeze-frame data. The technician should identify which fault caused the ECM to activate the limited-power strategy, then test the accelerator-pedal sensors, throttle-position sensors, throttle actuator, throttle body, wiring, connectors, 5-volt reference, grounds, battery and charging system, communication circuits, and module software as appropriate.
Replacing the throttle body or ECM solely because P2106 is present can result in an unnecessary repair. The underlying trigger should be identified first.
If the vehicle has severe power loss, unpredictable throttle response, repeated stalling, or cannot safely maintain traffic speed, P2106 should be treated as a high-priority fault and the vehicle should be inspected before continued driving.
