14-01-2025
18 min.
800

P2022 Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)

P2022 Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2) is a generic OBD-II diagnostic trouble code indicating that the vehicle's control module has detected an excessively high electrical signal in the intake manifold runner position sensor or switch circuit on Bank 2.

The intake manifold runner system controls the path and characteristics of airflow entering the engine. Depending on engine speed, load, and operating conditions, the runner mechanism may change position to improve airflow, torque, fuel economy, combustion, or emissions.

A position sensor or switch provides feedback to the engine control module about the position of the runner mechanism.

When the electrical signal from the Bank 2 runner position sensor is higher than the control module expects, the module may store P2022 and illuminate the Check Engine Light.

In simple terms, P2022 means the ECM/PCM is seeing a signal voltage that is too high from the Bank 2 intake manifold runner position sensor or switch circuit.

The word “High” refers primarily to the electrical signal in the circuit, not necessarily to the physical position of the intake runner.

For example, P2022 does not automatically mean:

The runner is physically stuck fully open
The intake flap is too far open
The engine is receiving too much air

The actual cause could instead be:

A faulty position sensor
A signal wire shorted to voltage
An incorrect reference voltage
Poor electrical connections
Damaged wiring
A failed position switch
An actuator or runner-position problem
A control-module fault

What Does P2022 Mean?

The code description contains several important terms.

Intake Manifold Runner

An intake manifold runner is an internal passage through which intake air travels toward the engine cylinders.

Many modern engines use an intake manifold runner control system to alter the airflow path.

Depending on the engine design, the system may be called:

Intake Manifold Runner Control (IMRC)
Intake Manifold Tuning (IMT)
Intake Runner Control
Variable Intake Manifold
Intake Manifold Flap Control

The exact terminology and design vary by manufacturer.

The system may be used to improve:

Low-RPM torque
High-RPM airflow
Throttle response
Combustion efficiency
Fuel economy
Emissions

Position Sensor / Switch

The runner position sensor or switch provides feedback about the physical position of the intake runner mechanism.

The control module can compare:

Commanded position → Actual position

If the electrical signal indicates an unexpectedly high value, P2022 may be stored.

Bank 2

Bank 2 refers to the side of a multi-bank engine that does not contain cylinder number one.

On a typical V-type engine:

Bank 1 = cylinder number one side
Bank 2 = opposite cylinder bank

Inline engines generally have only one cylinder bank.

Therefore, Bank 2 is primarily relevant to engines with two or more cylinder banks.

Circuit High

This is the key part of P2022.

“Circuit High” means the control module has detected an electrical signal that is higher than the expected range.

Possible reasons include:

Signal wire shorted to battery voltage
Open signal circuit
Faulty sensor
Incorrect reference voltage
Poor ground
Damaged connector
Wiring fault
Internal sensor failure

The exact interpretation depends on the specific circuit design.

Therefore, P2022 should not automatically be interpreted as a mechanical “runner stuck open” condition.

How Does the Intake Manifold Runner System Work?

The intake runner system uses a mechanism to alter airflow through the intake manifold.

Depending on the engine, the system may contain:

Runner flaps
Electric actuator
Vacuum actuator
Control solenoid
Position sensor
Position switch
Mechanical linkage

The ECM/PCM commands the runner system to a particular position.

The actuator moves the mechanism.

The position sensor then reports the actual position.

The control loop can be simplified as:

ECM command → Actuator → Runner mechanism → Position sensor → Feedback signal → ECM

If the feedback signal is too high, the control module may store P2022.

Symptoms of P2022

Symptoms vary depending on the engine and the cause of the high circuit signal.

Check Engine Light

The most common symptom is an illuminated Check Engine Light.

Reduced Engine Performance

Incorrect runner control can affect the engine's airflow characteristics.

The driver may notice:

Reduced acceleration
Less engine power
Poor throttle response

Engine Hesitation

The engine may hesitate during acceleration if runner operation is affected.

Poor Low-Speed Torque

If the runner system is designed to improve low-speed airflow, a malfunction can reduce torque at low RPM.

Poor High-RPM Performance

Depending on the intake design, the engine may also lose airflow efficiency at higher RPM.

Rough Idle

Some engines may experience unstable or rough idle if the runner mechanism is not in the expected position.

However, rough idle is not present on every vehicle with P2022.

Reduced Fuel Economy

Incorrect airflow management can affect combustion efficiency and fuel consumption.

Increased Emissions

Incorrect intake airflow can affect combustion and emissions.

Engine May Operate Normally

Some vehicles with P2022 may still drive normally, especially if the engine control module can compensate for the problem or place the runner system into a default position.

Common Causes of P2022

Faulty Intake Manifold Runner Position Sensor

A defective position sensor is one of the primary possibilities.

Internal sensor failure can cause the output signal to remain excessively high.

Possible problems include:

Internal short
Incorrect resistance
Damaged sensing element
Incorrect output voltage
Internal electrical failure

Signal Wire Shorted to Voltage

A signal wire contacting battery voltage or another powered circuit can cause a high signal.

This is an important possibility when diagnosing a circuit-high code.

Possible causes include:

Damaged insulation
Harness chafing
Incorrect previous wiring repair
Pinched harness
Contact with another powered wire

Open Signal Circuit

Depending on the sensor's electrical design, an open signal circuit can cause the control module to see a high voltage.

For example, if the module internally pulls the signal toward a reference voltage, loss of the sensor's normal circuit path can make the input appear high.

Therefore, an open circuit should not be overlooked when diagnosing P2022.

Incorrect Reference Voltage

Many position sensors use a reference voltage supplied by the control module.

If the reference voltage is abnormal, the sensor signal may also become abnormal.

Poor Sensor Ground

A faulty ground can cause incorrect sensor voltage.

A high signal can sometimes occur when the sensor does not have the correct electrical ground.

Corroded Connector

Corrosion can alter electrical resistance and disrupt the sensor signal.

Loose Terminal

A connector may look properly installed while one of its terminals has poor contact.

This can cause an abnormal signal.

Damaged Wiring Harness

The runner sensor wiring may be exposed to:

Engine vibration
Heat
Oil
Moisture
Chafing
Road debris

Any of these can damage the circuit.

Failed Position Switch

If the system uses a switch rather than a variable position sensor, the switch may be defective or incorrectly reporting runner position.

Faulty Runner Actuator

An electric actuator may fail internally or mechanically.

If the actuator does not move as commanded, the feedback signal may not match the expected position.

Damaged Runner Linkage

The actuator and runner mechanism may be connected by a mechanical linkage.

Possible problems include:

Broken linkage
Disconnected linkage
Excessive play
Worn connection
Bent linkage

Sticking Intake Runner

Carbon buildup or mechanical contamination can cause the runner mechanism to stick.

Possible causes include:

Carbon deposits
Dirt
Corrosion
Damaged runner
Worn bushings
Mechanical obstruction

Vacuum System Problem

Some runner systems use vacuum actuators.

A vacuum-operated system may malfunction because of:

Cracked vacuum hose
Disconnected hose
Faulty vacuum solenoid
Insufficient vacuum
Damaged actuator diaphragm

Faulty Runner Control Solenoid

If the system uses a vacuum control solenoid, a malfunctioning solenoid can prevent correct runner operation.

Incorrect Sensor Installation

A recently replaced or serviced sensor may be:

Incorrectly installed
Incorrectly positioned
Connected incorrectly
Improperly secured

Incorrect Replacement Sensor

A sensor that physically fits but has different electrical characteristics may produce an incorrect signal.

The replacement component should always be verified against the exact vehicle application.

ECM/PCM Problem

In rare cases, the engine control module itself may have an internal input-circuit problem.

The ECM/PCM should generally be considered only after the external sensor and wiring have been tested.

Software or Calibration Problem

Some vehicles may require a control-module software update if a manufacturer has identified a problem with runner-position monitoring.

Vehicles Commonly Affected by P2022

P2022 can occur on vehicles equipped with a Bank 2 intake manifold runner position sensor or switch.

Examples may include:

Ford F-150
Ford Explorer
Ford Expedition
Ford Mustang
Chevrolet Silverado
Chevrolet Tahoe
Chevrolet Suburban
GMC Sierra
GMC Yukon
Cadillac Escalade
Dodge Charger
Dodge Challenger
Jeep Grand Cherokee
Ram 1500
Toyota Tundra
Toyota Sequoia
Nissan Pathfinder
Nissan Armada
Infiniti QX80
BMW 3 Series
BMW 5 Series
Mercedes-Benz E-Class
Audi Q7
Volkswagen Touareg
Porsche Cayenne

This list is only an example and is not exhaustive.

The exact application of P2022 depends on:

Model year
Engine
Intake manifold design
Runner control system
Position sensor type
Electrical circuit design
ECM/PCM calibration

How Is P2022 Diagnosed?

P2022 is a circuit-high code, so diagnosis should focus heavily on the electrical signal and wiring.

The sensor should not automatically be replaced before testing the circuit.

Step 1: Scan for Additional Trouble Codes

Use a suitable diagnostic scan tool to retrieve:

Stored codes
Pending codes
History codes
Freeze-frame information

Look for related codes involving:

Intake manifold runner control
Runner position
Runner actuator
Vacuum control
Wiring
Engine performance
Misfires

Additional codes can help identify the underlying fault.

Step 2: Review Freeze-Frame Data

Check the operating conditions present when P2022 was stored.

Depending on the scan tool, review:

Engine RPM
Engine load
Vehicle speed
Throttle position
Engine coolant temperature
Intake air temperature
Battery voltage
Runner commanded position
Runner actual position

This can help determine when the high signal occurred.

Step 3: Monitor Live Runner Position Data

If available, monitor the Bank 2 runner position sensor.

Compare:

Commanded runner position vs. actual runner position

Look for:

Maximum or near-maximum signal
Frozen position value
Signal that does not change
Signal higher than expected
Position feedback inconsistent with the command

Step 4: Determine Whether the High Signal Is Electrical or Mechanical

This distinction is critical.

If the sensor signal is electrically high even when the runner is physically in the correct position, suspect:

Sensor
Signal wire
Reference voltage
Ground
Connector

If the electrical signal is plausible but the runner physically remains in the wrong position, investigate:

Actuator
Linkage
Runner mechanism
Carbon buildup
Vacuum system

Step 5: Inspect the Sensor

Check the Bank 2 runner position sensor for:

Physical damage
Loose mounting
Contamination
Incorrect installation
Corrosion

Step 6: Inspect the Connector

Check for:

Corrosion
Moisture
Bent pins
Loose terminals
Poor terminal tension
Damaged seals
Broken locking mechanism

Step 7: Identify the Sensor Circuit

Before taking voltage measurements, identify the exact circuit from the vehicle's wiring diagram.

Depending on the design, the sensor may have:

5-volt reference
Signal
Ground

Other systems may use different arrangements.

Do not assume the wiring configuration without checking manufacturer information.

Step 8: Check Reference Voltage

Measure the reference voltage according to the manufacturer's service procedure.

An abnormal reference voltage can affect the sensor signal.

Step 9: Check Sensor Ground

Verify that the sensor ground is reliable.

A poor ground can cause incorrect sensor readings.

Step 10: Measure Signal Voltage

Measure the Bank 2 runner position sensor signal.

Compare the reading with the manufacturer's specification.

If the signal remains excessively high regardless of runner position, suspect:

Sensor
Signal wire
Reference circuit
Ground
Connector

Step 11: Check for a Short to Voltage

Inspect the signal wire for unwanted voltage.

A signal wire shorted to:

Battery voltage
Ignition voltage
Another powered circuit

can cause P2022.

Step 12: Check for an Open Circuit

Test the signal circuit for continuity according to the manufacturer's wiring procedure.

An open circuit may produce a high input depending on the circuit design.

Check:

Signal wire
Connectors
Splices
Harness sections
ECM terminals

Step 13: Perform a Wiggle Test

Monitor the sensor signal while carefully moving the harness and connector.

Pay particular attention to areas where the wiring passes near:

Intake manifold
Engine brackets
Hot components
Moving parts

If the signal changes unexpectedly, an electrical connection or wiring problem may exist.

Step 14: Inspect the Wiring Harness

Look for:

Melted insulation
Chafing
Broken wires
Pinched wires
Loose clips
Oil contamination
Previous repairs

Step 15: Test the Position Sensor

If the manufacturer provides a resistance or voltage test, compare the sensor output against the specified runner positions.

The sensor should provide a predictable signal as the runner mechanism moves.

Step 16: Test the Runner Actuator

Command the actuator using the appropriate diagnostic procedure.

Verify that it:

Moves
Reaches commanded positions
Does not stick
Does not stop unexpectedly

Step 17: Inspect the Runner Linkage

Check for:

Broken linkage
Disconnected rod
Excessive mechanical play
Worn joints
Bent components

Step 18: Check for Mechanical Binding

Verify that the intake runner moves smoothly.

If movement is restricted, inspect for:

Carbon buildup
Dirt
Corrosion
Damaged runner
Worn bushings

Step 19: Check Vacuum Operation

For vacuum-operated systems, inspect:

Vacuum hoses
Vacuum solenoid
Vacuum reservoir
Actuator diaphragm
Vacuum supply

Step 20: Compare Bank 1 and Bank 2

Where the engine uses similar runner systems on both banks, compare their sensor signals and actuator behavior.

A normal Bank 1 system can provide a useful reference when diagnosing Bank 2.

However, the two banks should only be compared when their systems are designed similarly.

Step 21: Check Manufacturer Technical Information

Search the manufacturer's service information for:

Technical Service Bulletins
Known sensor failures
Wiring harness problems
Connector issues
Updated sensors
Updated actuators
Software updates
Diagnostic procedures

Step 22: Verify the ECM/PCM

If the sensor, wiring, reference circuit, ground, actuator, and runner mechanism are all verified to be correct, the ECM/PCM input circuit may require further testing.

How to Fix P2022

The correct repair depends on why the Bank 2 runner position signal is too high.

Replace the Faulty Position Sensor

If testing confirms that the sensor is producing an abnormally high output, replace it with the correct vehicle-specific component.

Repair a Signal Wire Short to Voltage

If the signal wire is contacting battery or another powered circuit, repair the damaged wiring and restore the correct circuit routing.

Repair an Open Circuit

If an open circuit is causing the input to remain high, repair the affected wire, terminal, connector, or splice.

Repair Damaged Wiring

Replace or repair wiring damaged by:

Heat
Chafing
Vibration
Oil
Corrosion
Previous repairs

Secure the harness properly after the repair.

Repair the Electrical Connector

Replace or repair connectors with:

Corroded terminals
Bent pins
Loose terminals
Damaged seals
Poor terminal tension

Correct Reference Voltage Problems

If the sensor is receiving an incorrect reference voltage, diagnose the reference circuit and repair the underlying problem.

Repair Sensor Ground Problems

Restore the correct ground connection if testing identifies a ground fault.

Repair the Runner Actuator

If the actuator does not operate correctly, repair or replace it according to the manufacturer's procedure.

Repair the Runner Linkage

Replace broken, disconnected, or excessively worn linkage components.

Clean or Repair the Runner Mechanism

If carbon buildup or contamination is preventing proper runner movement, clean or repair the mechanism according to the manufacturer's service procedure.

Repair Vacuum System Problems

For vacuum-operated systems, repair:

Cracked hoses
Disconnected hoses
Faulty solenoids
Vacuum leaks
Damaged actuator diaphragms

Replace the Intake Manifold

If the runner mechanism is internally damaged and cannot be repaired separately, the intake manifold may require replacement.

Update ECM/PCM Software

If a manufacturer software update addresses an incorrect runner-position monitoring strategy, updating the module may resolve the issue.

Repair or Replace the ECM/PCM

If all external components and wiring are verified to be correct but the module still reports a high input, further ECM/PCM testing may be necessary.

Module replacement should be a last step after the complete circuit has been verified.

Clear the Code and Verify the Repair

After the repair:

Clear P2022.
Monitor Bank 2 runner position data.
Compare commanded and actual runner position.
Check sensor signal voltage.
Verify reference voltage.
Verify sensor ground.
Inspect the connector.
Perform a wiggle test.
Test the runner actuator.
Inspect the runner linkage.
Check for mechanical binding.
Check vacuum operation where applicable.
Compare Bank 1 and Bank 2 operation where appropriate.
Complete the required drive cycle.
Confirm that P2022 does not return.

The vehicle should ideally be tested under the operating conditions in which the original fault occurred.

What Happens If P2022 Is Ignored?

P2022 does not normally mean that the engine will immediately fail.

However, an incorrect runner-position signal can prevent the ECM/PCM from accurately controlling or monitoring the intake manifold runner system.

Possible consequences include:

Reduced engine performance
Poor throttle response
Reduced torque
Poor fuel economy
Increased emissions
Incorrect intake-air management
Additional intake runner faults
Check Engine Light remaining illuminated

If the runner mechanism is mechanically stuck as well, performance problems may become more noticeable.

Can You Drive With P2022?

In many cases, a vehicle with P2022 can still be driven if it starts and operates normally.

However, the underlying problem should be diagnosed and repaired.

Driving may be relatively uneventful if the control module can place the runner system into a default operating position.

You should seek prompt inspection if the vehicle also has:

Severe hesitation
Major loss of power
Engine misfires
Stalling
Rough running
Multiple engine-control codes
Poor throttle response

A flashing Check Engine Light generally indicates a more urgent engine problem and should not be ignored.

Is P2022 a Serious Code?

P2022 is generally considered a low-to-moderate severity diagnostic trouble code.

It usually does not indicate an immediate risk of catastrophic engine failure.

However, the severity can increase if the high circuit signal is caused by a broader electrical or mechanical failure.

Possible consequences of leaving the fault unresolved include:

Reduced performance
Reduced fuel economy
Increased emissions
Continued Check Engine Light
Incorrect runner control
Additional intake-system faults

The actual severity depends on the vehicle and the cause of the high signal.

P2022 vs. P2021

P2021 and P2022 concern the same Bank 2 intake manifold runner position sensor or switch circuit but identify opposite signal conditions.

Code	General Meaning
P2021	Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 2)
P2022	Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)

P2021 means the control module is seeing a signal that is lower than expected.

P2022 means the control module is seeing a signal that is higher than expected.

The causes can overlap, but the electrical measurements should point toward the specific fault.

P2022 vs. P2023

Code	General Meaning
P2022	Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)
P2023	Intake Manifold Runner Position Sensor / Switch Circuit Intermittent (Bank 2)

P2022 describes a high electrical signal.

P2023 describes an intermittent circuit condition.

A damaged connector or wiring harness can potentially cause either code depending on how the circuit behaves.

P2022 vs. P2020

Code	General Meaning
P2020	Intake Manifold Runner Position Sensor / Switch Circuit Range / Performance (Bank 2)
P2022	Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)

P2020 indicates a range or performance problem.

P2022 specifically indicates a high circuit signal.

A runner mechanism that does not follow the commanded position may contribute to P2020, while a signal wire shorted to voltage may be more strongly associated with P2022.

P2022 vs. P2019

Code	General Meaning
P2019	Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 1)
P2022	Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)

The main difference is the cylinder bank.

P2019 = Bank 1

P2022 = Bank 2

On a V-type engine, comparing the two banks can sometimes help identify whether the problem is isolated to one side of the intake system.

P2022 vs. P2078

P2078 also concerns an intake manifold tuning valve position sensor/switch circuit high condition, but it is not necessarily the same component or control strategy.

Code	General Meaning
P2022	Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)
P2078	Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit High (Bank 1)

Because manufacturers use different terminology and intake designs, the exact component should always be confirmed using vehicle-specific service information.

How to Prevent P2022

Not every electrical or sensor failure can be prevented, but proper maintenance can reduce the likelihood of runner-system problems.

Recommended practices include:

Inspect intake runner wiring during routine service.
Keep wiring away from excessive engine heat.
Secure wiring harnesses against vibration.
Inspect connectors for corrosion.
Prevent moisture from entering electrical connectors.
Repair damaged wiring promptly.
Inspect vacuum hoses on vacuum-operated systems.
Address intake manifold carbon buildup when appropriate.
Repair damaged runner linkages early.
Use the correct replacement sensor.
Ensure electrical connectors are fully seated.
Avoid damaging wiring during intake manifold repairs.
Follow manufacturer maintenance recommendations.
Do not ignore a Check Engine Light.

Final Thoughts

P2022 Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2) indicates that the engine control module has detected an electrical signal that is higher than expected in the Bank 2 intake manifold runner position sensor or switch circuit.

The most important point is that “Circuit High” does not necessarily mean the intake runner is physically stuck open.

The high signal can be caused by:

Faulty position sensor
Failed position switch
Signal wire shorted to voltage
Open circuit
Incorrect reference voltage
Poor sensor ground
Corroded connector
Loose electrical terminal
Damaged wiring harness
Faulty runner actuator
Damaged linkage
Sticking runner mechanism
Carbon buildup
Vacuum-system problems
Incorrect sensor installation
Incorrect replacement sensor
ECM/PCM problems
Software or calibration issues

The correct diagnostic approach is to determine whether the problem is electrical or mechanical.

A technician should first scan for additional codes and review freeze-frame data. Live runner-position data should then be monitored while comparing commanded and actual positions.

The Bank 2 sensor circuit should be inspected for an excessively high signal, short to voltage, open circuit, incorrect reference voltage, and poor ground. The connector and wiring harness should be inspected carefully because wiring faults can produce circuit-high conditions.

If the electrical system is operating correctly, the runner actuator, linkage, vacuum system where applicable, and physical runner mechanism should be checked.

The position sensor should not automatically be replaced simply because P2022 is stored.

P2022 is generally a low-to-moderate severity fault, and many vehicles can still be driven. However, the problem should be repaired because incorrect intake runner feedback can affect engine airflow, performance, fuel economy, and emissions.

After the underlying fault has been repaired, the code should be cleared and the vehicle should be tested through the appropriate operating conditions. The Bank 2 runner position signal should remain within specification, and P2022 should not return.

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