Mercedes Benz M-Class - Irregular engine running | HELLA
Mercedes Benz
M-Class (163)
Model year: 1999 – 2004
Engine: 612,963
All models
Irregular engine running
Error code: P1187
Common rail pressure is too high/low
If the above fault code is read in the fault memory of this vehicle model's ECU, this may be associated with a defect in the fuel filter. Air inclusions in the fuel line after the filter can lead to a lack of fuel flow.
In this case, the fuel supply should be checked and the fuel filter should be replaced if necessary.
The vehicle manufacturer offers a modified fuel filter in the spare parts program.
Spare part number:
Fuel filter A 611 092 00 01
Fuel filter (bio diesel) A 611 092 00 01
Afterwards clear the fault memory entry using a diagnostic instrument.
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