Fault Code Description |
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The main diagnosis monitors the adaptation boundaries and even the limit position of the adaptation boundaries. The adaptation boundaries are specified by the respective characteristic maps. However, the diagnosis does not take the evaluation into account ? the ? control and ? the tank ventilation The diagnosis fuel system still works with two additional functions that monitor the oxygen sensor control factor. These functions are active in both the adaptation phases and in the tank ventilation phases because this is a requirement of the authorities (CARB = California Air Resources Board). The fault is identified when the max. adaptation limit (25..30%) is undershot for 10 seconds. Cylinder bank 1 Possible cause of fault: Mixture too lean A. intake plenum 1. HFM fault 2. Leak in intake tract B. intake plenum exhaust apparatus 1. Leakage in the exhaust system 2. One catalyst completely closed! C. Fuel path faulty fuel injector (mechanical) Defective high-pressure system (pump or sensor) |
Fault Code Conditions | |
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General Conditions |
Voltage condition: - System voltage > 10 V Temperature condition: - Coolant temperature > -10 °C Time condition: - None Other conditions: - Engine on Adaptation active |
Terminal Condition |
Terminal 15 on |
Driving Conditions |
Fault Time Condition |
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10 sec. adaptation at limit position in max. 60 sec |
Service Plan |
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‐ Visual inspection of affected components ‐ Locate leaks and rectify - Check hot film air mass meter plug contacts and electrical lines - Replace hot film air mass meter - fused catalyst (visual inspection via probe ports) - Check fuel high pressure - Check high pressure sensor contacts and electrical lines - Replace high pressure sensor - Replace high pressure sensor |
Fault Impact |
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Possible noticeable symptoms: Engine running rough (misfiring, rough idling) Engine does not shut down (switch-off inhibitor) stranded vehicle information: None |
Warnings | |
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Warning Lights |
MJ10: ‐ Check engine ECE: on ‐ Electronic engine output reduction ECE: off - CC message: none MJ11: - Check engine US on ‐ Electronic engine output reduction US: off - CC message: none |
Control Center Messages |
Service Notes |
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None |