P050A Idle Speed Control

P050A

Idle speed control
The fault "Idle speed control" is detected when the DME cannot set the specified idle speed for a certain amount of time.

Diagnostic conditions
- Engine idling

Possible fault causes

Fault type "Over limit value"
- Secondary air behind throttle valve

Fault type "Below limit value"
- Air cleaner blocked/frozen
- Air guide between air cleaner and throttle valve blocked
- Secondary unit sluggish
- Exhaust system blocked