Volvo Engine D12D AE E3 (Tier 3) Fault Code: SID21 FMI 2 Engine Position

Volvo Engine D12D AE E3 (Tier 3) Fault Code: SID21 FMI 2 Engine Position

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers mechanical fault. (EA45/EA46)

SYMPTOM:
Increased fuel consumption.

POSSIBLE CAUSES:
1. Engine transmission not correct; bad correlation between camshaft and. crankshaft.
2. Reversed polarity on sensor.