P0226
Throttle/Pedal Position Sensor C Circuit Range/Performance
Throttle position sensor C signal is not tracking the other channels of the redundant TPS within tolerance. The ECU compares all three channels and detects rationality failure.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Common causes
Ordered by how often each turns out to be the cause.
- TPS contact agingCommon
- Dirty or sticking throttle platePossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Throttle Position Sensor
- Throttle Body
P0226 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.