What does code P0228 mean?

Q: What does code P0228 mean?

Throttle/Pedal Position Sensor/Switch 'C' Circuit High. P0228 means the engine computer has detected an abnormally high voltage on the signal circuit for throttle or pedal position sensor 'C', which is typically the second or redundant sensor in a drive-by-wire throttle system. The computer expects this signal to stay within a specific low-voltage range at rest and rise smoothly as the throttle is pressed, so a voltage above the upper limit tells it the circuit is shorted to power or the sensor has failed.

DTC codes / P02xx · Fuel and air metering (injector circuits) / P0228

P0228Throttle/Pedal Position Sensor/Switch 'C' Circuit High

P0228 means the engine computer has detected an abnormally high voltage on the signal circuit for throttle or pedal position sensor 'C', which is typically the second or redundant sensor in a drive-by-wire throttle system. The computer expects this signal to stay within a specific low-voltage range at rest and rise smoothly as the throttle is pressed, so a voltage above the upper limit tells it the circuit is shorted to power or the sensor has failed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

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