P2622
Throttle Position Output Circuit High
Fuel & air metering
Generic OBD-II
Medium
What it means
P2622 means the control module has detected an abnormally high voltage on the throttle-position output circuit. Because the module can no longer trust the throttle signal, it often limits power and puts the engine into a reduced-power limp mode. The car normally still runs and starts, but acceleration is poor until the sensor or its wiring is repaired.
Medium
Can I keep driving? The car may drop into reduced-power 'limp' mode. Usually drivable, but response is poor — get it looked at soon.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced engine power or limp mode
- Hesitation or poor throttle response
- Erratic or stuck idle
Common causes
Most likely first
- Faulty throttle position sensorLikely
- High-voltage fault, open, or short in the throttle-position signal circuitCommon
- Corroded or loose throttle/pedal-sensor connectorCommon
- Dirty or carboned throttle body affecting the readingLess often
- Faulty control module (ECM/PCM)Less often
How to diagnose & fix
Work through it in order
- Scan for related throttle/pedal codes (P0120–P0124, P2135) to narrow it down.
- With key on, engine off, check the sensor connector for a steady 5-volt reference and a good ground.
- Inspect the signal wire for a short to voltage or an open.
- Clean the throttle body if it is carbon-fouled.
- Replace the throttle position sensor if the signal is out of range. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2622?+
You can usually drive it, but expect sluggish, limp-mode performance. Sudden power loss in traffic is a hazard, so repair it promptly.
Can I just clear P2622?+
It returns quickly if the throttle circuit still reads high. Fix the sensor or wiring first.
Related codes
Often seen with P2622
Read & clear P2622 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX