Twingo 133,172 Racer
Okay I have a phase 2 172 which keeps hitting limp home mode randomly. The code shows up as p0120. Which it's throttle positions sensor/switch a circuit. What is the switch a circuit part mean? I have changed the pedal but cannot try it as it is a track car. But I have discovered that when the ignition is on but engine not running bury your foot to the floor and bam limp home mode but does not show a code on the reader. Do the same with the engine running, perfectly fine. Possible throttle body issue? The throttle body is making a lot of noise and i have noticed that when opening the throttle the butterfly doesnt open until around 2/3s RPM then it's wide open, is this normal?I will book a test day to know for sure that I have cured the problem before my next race. Any ideas in the meantime chaps?