P212E code meaning
Throttle Position Sensor/Switch G Circuit Intermittent
Powertrain system Generic code P21xx codes Check engine light
What P212E means
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.
P212E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P212E
- Warning lamp that comes and goes
- Brief stumbles or power dips
- Fault often not present at the workshop
Common causes of P212E
- Most 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
- Less likelyMomentary contact loss on the sensor track
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Throttle position sensor gElectronic throttle body
What each part of P212E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 2E | The exact fault in that area. |
What to do next
- Note P212E and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P212E
What does P212E mean?
P212E means "Throttle Position Sensor/Switch G Circuit Intermittent". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P212E?
Drive gently and only to a workshop. With P212E the car can go into limp mode (reduced power) to protect itself.
Will P212E fail an emissions test?
Yes, it can. P212E is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P212E to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P212E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.