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.