VOLVOUU Engine D13F Fault Code: SID 21 FMI 2 Engine Position

VOLVOUU Engine D13F Fault Code: SID 21 FMI 2 Engine Position

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers mechanical fault.

SYMPTOM:
Increased fuel consumption.

POSSIBLE CAUSES:
Engine transmission not correct; bad correlation between camshaft and crankshaft.