P0171

29E0 - P0171

Information saved in
DME

Fault code
29E0 - P0171

Fault text
Mixture control

Fault description
System Too Lean (Bank 1)

Condition for fault identification
Test condition:
Closed-loop lambda mixture control = Active
Terminal condition: Engine must be running
Voltage condition:
none

Condition for fault memory entry
65 sec. lambda controller + adaptation deviation in max.
1200 sec.

Action in service
- Visual inspection of affected components
- Find and repair leaks
- Mutual exchange of HFM or injector valves
- Inspect HFM plug-in contacts and electrical wires
- Check fuel pressure

Fault effect and breakdown warning


Driver information
Warning light:
MIL on in 2nd driving cycle

Service instruction
none