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1. Saturday: Each time I start to accelerant over ~4000rmps I lose all acceleration. Check errors and get P1120 and P1121. Clear errors… as soon as I go over ~4000 rpms I can’t accelerant. Like I hit a rev-limiter.

2. Sunday: Switch out O2 sensors after cats running great.

3. I lost all Throttle response today. Restart and unable to accelerate after ~4000 rpms. Error code P1122 and P1120/P1121. I am thinking it’s the Throttle Valve Assembly 997-605-115-01-M14.

2002 Carrera C2 CAB.


Edited by Chris996
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P1120 Throttle Valve – Signal Implausible


Throttle position sensor 1 - signal implausible

Throttle position sensor 1 - below limit

Throttle position sensor 1 - above limit


431 Throttle position sensor 2 - signal implausible

431 Throttle position sensor 2 - below limit

431 Throttle position sensor 2 - above limit

Possible fault cause

- Open circuit or short circuit in the wiring

- Throttle position sensor faulty

- DME control module faulty

Make sure the throttle valve connectors are secure and clean. Check for cuts or other damage.

Reset the codes and see if they come back.

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