Open or damaged signal wire between the sensor and the PCM; Short to voltage on the signal circuit; Failed intake manifold runner position sensor; Corroded or loose electrical connector at the sensor or PCM; Binding or stuck intake manifold runner flap causing the sensor to read out of range; Faulty PCM driver or internal circuit (rare)

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P2022

P2022Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)

P2022 means the powertrain control module (PCM) has detected an abnormally high voltage on the signal circuit of the intake manifold runner position sensor for bank 2. The sensor reports the position of the intake manifold runner flap, and a high voltage reading typically indicates an open circuit, a short to voltage, or a sensor that has failed in a way that drives the signal above the expected range. The PCM sets this code when the signal exceeds the calibrated maximum for a set time, often disabling runner control and illuminating the check engine light.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Check engine light illuminated, often with no other noticeable symptoms
Reduced engine performance, especially at low RPM or during acceleration
Poor fuel economy or rough idle quality
Hesitation or stumble when accelerating from a stop
In some cases, a limp-home mode with limited power

Common causes, most likely first

Open or damaged signal wire between the sensor and the PCM
Short to voltage on the signal circuit
Failed intake manifold runner position sensor
Corroded or loose electrical connector at the sensor or PCM
Binding or stuck intake manifold runner flap causing the sensor to read out of range
Faulty PCM driver or internal circuit (rare)

How to diagnose and fix it

Scan all modules for stored and pending codes, and record freeze-frame data to understand when the fault occurs
Visually inspect the sensor connector and wiring for corrosion, chafing, or loose pins
Measure reference voltage and ground at the sensor connector with the key on, engine off
Backprobe the signal wire and compare sensor voltage to the scan tool's runner position reading while moving the flap by hand
Check for continuity and short to voltage on the signal circuit between the sensor and PCM
If wiring is good, replace the intake manifold runner position sensor and clear codes
If the code persists, test the runner flap for binding and inspect the PCM connector and internal circuits

What the voltage reading really tells you

A high voltage code often means the signal circuit is open, not that the sensor itself has failed, so always check continuity before replacing parts.
The intake manifold runner position sensor on bank 2 may share a reference voltage or ground with other sensors, and a fault in that shared circuit can set multiple codes.
Carbon buildup or a sticking runner flap can cause the sensor to report a position outside the expected range, mimicking an electrical fault.
On some vehicles, the runner position sensor is integrated into the actuator and cannot be replaced separately, requiring a different diagnostic approach.
A short to voltage on the signal wire can be caused by chafing against a hot engine component, so inspect the harness routing carefully.

Can I keep driving with P2022?

You can usually drive the vehicle with this code, but expect reduced performance and possible limp-home mode. Avoid heavy acceleration or towing until the fault is repaired, and have it diagnosed soon to prevent further damage to the intake system.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.