17990/P1582/005506
From Ross-Tech Wiki
17990/P1582/005506 - Idle Adaptation Limit Reached
Possible Solutions
- Check Fuel Pressure
- Check Intake System for Leaks (False Air)
- Check Fuel Injector(s)
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
- Check Exhaust System for Leaks
- Check Secondary Air Injection (AIR) for Leaks
- Check Vacuum Lines for Leaks
- Check Throttle Body
Special Notes
- It may be necessary to remove and clean the Throttle Body and perform a Throttle Body Alignment (TBA)
- When this fault is stored in the early VW models with the 2.8L VR6 (AAA) and the 2.0L (ABA), it may be necessary to drive the vehicle for a few days for the idle to return to normal after removing and cleaning the Throttle Body. If that is still not successful then disconnecting and reconnecting the car's battery cables may be necessary to allow the fault to be cleared.