P212EThrottle Position Sensor/Switch G Circuit Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P212E is reserved for brief dropouts or spikes on throttle position signal G, the kind that clear again before a steady low or high fault can be confirmed. No manufacturer documents this code publicly. GM, which assigns G to sensor 2 of the bank 2 throttle body on a twin-throttle engine, reacts to such glitches with its range checks instead: P212C below 0.195 V and P212D above 4.805 V each need only 0.14 s. CARB requires input sensors to be monitored for circuit faults, which is the duty this slot covers. In practice the trigger is a loose terminal, a chafed wire near the engine or moisture in the connector. Check the harness while flexing it with the engine running. The fault may vanish between workshop visits.
- What you may notice
- Warning lamp that comes and goes
- Brief stumbles or power dips
- Fault often not present at the workshop
- Likely causes
- LikelyLoose or worn terminal at the bank 2 throttle connector
- PossibleHarness chafed by engine movement, breaking contact now and then
- PossibleMoisture or corrosion in the connector
- RareMomentary contact loss on the sensor track
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.