P0012

287D - P0012

Information saved in
DME

Fault code
287D - P0012

Fault text
VANOS intake: Actuator movement

Fault description
VANOS intake: Actuator motion

Condition for fault identification
Test condition:
Engine running
Terminal condition: Terminal 15
Voltage condition:
none

Condition for fault memory entry
none

Action in service
1. If a DTC related to the camshaft position sensor has been
logged, repair this problem first
2. Check the connection (contact resistance, corrosion)
between the camshaft actuator and the DME. Determine
whether UBatt is present at the actuator and use tester to
perform system test
3. Check oil level/oil pressure
4. Check camshaft valves for contamination
Mutual exchange of camshaft solenoid valves
If successful: Replace intake-side solenoid valve
5. No improvement after 4.: Switch mutual positions of
VANOS units. If this is successful: Replace intake-side
VANOS unit

Fault effect and breakdown warning
The engine reverts to its emergency limp-home program,
continued vehicle operation is possible, because power is
reduced the driver should refrain from passing maneuvers.
Rough engine operation

Driver information
Warning light:
MIL ON

Service instruction
None