P0121 AUDI Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance

Possible causes

– Faulty throttle position sensor
– Throttle position sensor harness is open or shorted
– Throttle position sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)

When is the obd code mean?

Malfunction is detected when an excessively low or high voltage from the sensor is sent to ECM.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0121 AUDI OBD Code Description