P1506 Audi Idle Air Control Overspeed Error
Possible causes
– Faulty Idle Air Control (IAC) valve
– Idle Air Control (IAC) valve harness is open or shorted
– Idle Air Control (IAC) valve circuit poor electrical connection
– Idle Air Control (IAC) valve harness is open or shorted
– Idle Air Control (IAC) valve circuit poor electrical connection
Tech description
The P1506 Audi code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned.
If the problem persist, the IAC valve may need to be replaced.
If the problem persist, the IAC valve may need to be replaced.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1506 Audi Description
The P1506 Audi code is set when the Engine Control Module (ECM) detects engine idle speed that is greater than the desired rpm.
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