U1172

2DDD - U1172

Information saved in
DME

Fault code
2DDD - U1172

Fault text
DME2: No message from Valvetronic control unit

Fault description
No message from Valvetronic control module

Condition for fault identification
Test condition:
Determine whether LoCAN message is present:
VVT_DME_1,VVT_DME_2
Terminal condition: 800 ms after Terminal 15
Voltage condition:
battery voltage >10 V

Condition for fault memory entry
500 ms

Action in service
- Check LoCAN
- if 3 errors are present (bus off / CAN timeout VVT /
communications)
=> Defective bus / DME module
- if 2 errors are present (bus off / CAN timeout VVT)
=> VVT control module fault
- Check wiring harness B
=> Replace VVT ECU as indicated

Fault effect and breakdown warning
none

Driver information
Warning light:
MIL on in 2nd DC

Service instruction
none