29F0 - P2180 (DME)

29F0 - P2180

Information saved in
DME

Fault code
29F0 - P2180

Fault text
Fuel mixture adaptation 2, sumcheck fault

Fault description
System Too Rich Off Idle (Bank 2)

Condition for fault identification
Test condition:
Fuel-supply system monitored with aid of mixture
adaptation data; here lower part-load range (multiplicative
adaptation), system too rich
Release conditions:
- No active tank ventilation
- No fault preventing diagnosis is present
- Relative charge (load) > 20 %
- Mass airflow > 40 kg/h
- Temperature conditions met
Terminal condition: Engine running
Voltage condition:
battery voltage < 11 volts or battery voltage > 16 volts

Condition for fault memory entry
Approximately 10 min.

Action in service
High fuel pressure
Check positive crankcase ventilation
Check HFM (contamination, defective)
Check oxygen sensors before cat.

Fault effect and breakdown warning


Driver information
Warning light:
US MIL on (2nd driving cycle)

Service instruction
none