P2279

P2279

Diagnostic information - DME control unit

Intake air system leak

NOTE: A leak is detected upstream of the throttle valve (hose reduction detection) in suction and charging mode through comparison of various measured variables and characteristic maps.

Diagnostic conditions
- Full-throttle acceleration

Possible fault causes
- Charge-air cooler or charge-air line(s) (pressure-side) leaks between turbocharger and engine

Fault effects
- Boost pressure control switched off (Boost pressure low)
- Reduction Engine torque