?N20 and N26 Engine: Various VANOS System Faults Stored in DME. The Service Engine Soon lamp and Engine...

Bulletin number

121513

Component

Engine

Summary

?N20 and N26 Engine: Various VANOS System Faults Stored in DME. The Service Engine Soon lamp and Engine Malfunction warning are illuminated, and the vehicle has reduced power output. This situation can occur as a customer complaint, or after performing repairs to the engine valve train assembly. One or more of the following faults is stored in the DME. F10, F25, F30, F31 and F34: 131401 VANOS, exhaust, starting from cold: Non-adjustable 131501 VANOS, intake, starting from cold: Non-adjustable 131808 VANOS, exhaust, starting from cold: Position not reached 131908 VANOS, intake, starting from cold: Position not reached 130104 VANOS, intake, control fault, camshaft jammed 130304 VANOS, exhaust, control fault, camshaft jammed 130308 VANOS, exhaust, control fault, position not reached 130108 VANOS, intake, control fault, position not reached E84 and E89: 2D54 VANOS, exhaust, starting from cold: Non-adjustable 2D55 VANOS, intake, starting from cold: Non-adjustable 2D56 VANOS, exhaust, starting from cold: Position not reached 2D57 VANOS, intake, starting from cold: Position not reached 2D60 VANOS, exhaust, control fault, camshaft jammed 2D5A VANOS, intake, control fault, camshaft jammed 2D5B VANOS, intake, control fault, position not reached 2D61 VANOS, exhaust, control fault, position not reached If one of the applicable faults listed above is not stored in the DME fault memory then continue troubleshooting with the applicable test plan for the fault(s) stored. CAUSE This is due to a diagnostic programming error in the DME.

Owners of these vehicles have filed 1,236 complaints in the engine category.