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

Bulletin number

121513

Component

Engine and engine cooling

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. Various faults related to VANOS operation are stored in the DME. While performing the test plan, the results may appear to be inconclusive because the fault will not clear from DME fault memory. CAUSE This is due to a programming error associated with ISTA/P 2.49 and lower. The error is corrected with ISTA/P 2.50.2 or higher.

Owners of these vehicles have filed 1,043 complaints in the engine category.