Fault Information


Fault Code Description
Diagnosis monitors oxygen-sensor control.
The fault is detected when the fuel/air mixture of cylinder bank 1 is too lean and the adaptation limit (25...30 %) is exceeded for 40 s.

Possible cause of fault:
- Wiring harness defective
- Rail pressure sensor defective
- HFM defective
- Leak in intake area
- Leak in exhaust system
- Catalytic converter clogged
- Fuel injector defective
- High pressure system defective
Fault Code Conditions
General Conditions Voltage condition:
- System voltage > 10 V
Temperature condition:
- Ambient temperature > -10 °C
Time condition:
- None
Other conditions:
- Engine on
- Adaptation active
Terminal Condition

Driving Conditions
Fault Time Condition
The fault code is entered when a time interval cannot be specified while certain conditions are met.
Service Plan
- Check intake system for leaks
- Check exhaust system for leaks
- Check wiring harness between DME and HFM
- Check wiring harness between DME and rail pressure sensor
- Replace rail pressure sensor
- Replace HFM
- Replace fuel injector
- Replace high-pressure pump
Fault Impact
Possible noticeable symptoms:
- Misfiring
Breakdown information:
- None
Warnings
Warning Lights - Emission warning lamp ECE: ON
- Emission warning lamp US: ON
- Electronic engine output reduction ECE: OFF
- Electronic engine output reduction US: OFF
- CC-message: NONE
Control Center Messages
Service Notes
- None