P212A
Throttle Position Sensor/Switch G Circuit
A general electrical fault is reported on throttle position sensor G — open, shorted, or out of plausibility. Sensor G is part of a multi-channel redundancy on dual-throttle systems.
- 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.
- Sensor failedCommon
- Harness faultPossible
Parts involved
- Throttle Position Sensor G
P212A 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.