P2622
Throttle Position Output Circuit High
The buffered throttle position output is above the expected level. Typical causes are a short to battery or an open output stage.
- Check engine light: Yes
- Emissions related: No
- 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.
- Output wire shorted to B+Common
- Output buffer openPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Control Module
- Signal Output Buffer
- Wiring Harness
P2622 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.