P2104 Audi Electronic Throttle Control System Forced Idle
Possible causes
– Faulty Accelerator Position Sensor(APS)
– Faulty APS+Brake
– Faulty APS + Vehicle speed sensor
– Faulty APS + Vehicle speed sensor + Brake
– Faulty Electronic Throttle Control(ETC) Items(TPS or ETC motor etc)
– Faulty Powertrain Control Module (PCM)
– Faulty APS+Brake
– Faulty APS + Vehicle speed sensor
– Faulty APS + Vehicle speed sensor + Brake
– Faulty Electronic Throttle Control(ETC) Items(TPS or ETC motor etc)
– Faulty Powertrain Control Module (PCM)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2104 Audi Description
The Electronic Throttle Control(ETC) system is made of the components throttle body, Throttle Position Sensor(TPS)1&2 and Accelerator Position Sensor(APS) 1&2. The throttle body contains the actuator, the throttle plate and the throttle position sensor (potentiometer), which are integrated in one housing. The actuator consists of a DC motor with a two-stage gear. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. And it provides feedback to the Powertrain Control Module (PCM) to control the throttle motor in order to control the throttle valve opening angle properly in response to the driving condition.
Audi Vehicle:Audi A1,Audi A3,Audi A1,Audi A3,Audi A1,Audi A3,Audi A4,Audi A5,Audi Q3,Audi A5,Audi Q5,Audi A3,Audi A4,Audi A5,Audi TT,Audi Q3,Audi Q5,Audi S3,Audi TTS,Audi RS 3,Audi TT RS,Audi A7,Audi Q7,Audi A8,Audi A6,Audi S4,Audi S5,Audi Q5,Audi S6,Audi S8,Audi S5,Audi A8,Audi R8 V8,Audi RS 5,Audi S6,Audi R8 V10,Audi R8 GT,Audi A8L