Volvo Engine D11L (Tier 4) Fault Code: SID 21 FMI 3 Engine Position

Volvo Engine D11L (Tier 4) Fault Code: SID 21 FMI 3 Engine Position

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the signal from the speed sensor is missing.

SYMPTOM:
1. Engine is difficult to start, only after a long time of cranking.
2. Loss of power.

POSSIBLE CAUSES:
1. Loose connection.
2. Incorrectly installed sensor.
3. Defective sensor.
4. Short circuit to voltage.
5. Open circuit.

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