Throttle/Pedal Position Sensor/Switch A Circuit
The throttle body controls how much air goes into the engine. Two sensors tell the ECU how far open it is, and the ECU compares one with the other.
What the car has detected
The ECU has found a fault in the throttle position sensor circuit.
With a throttle fault the ECU usually limits the engine (limp mode) and the car barely accelerates. Drive carefully and have it checked soon.
Symptoms
- Engine or EPC warning light on
- Loss of power or limp mode
- Rough idle
Possible causes
- Dirty or faulty throttle body
- Faulty throttle position sensor
- Failed MAF sensor
- Broken or shorted wire, or a loose or corroded connector
Checks for the garage
- Clean the throttle body and run its adaptation
- Check the throttle body connector and wiring
- Compare the live data reading with the expected one
Next step
Ask for the throttle body, its connector and the air flow meter to be checked.
Go to a garage soon. The electrical check needs a multimeter and a diagnostic tool.