VOLVOUU Engine D13F Fault Code: PID 45 FMI 3 Inlet Air Heater Status
CONTROL UNIT:
Engine ECU
DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the current is above 3.9 A.
SYMPTOM:
1. Preheating not functioning.
2. Difficult to start in extreme cold.
POSSIBLE CAUSES:
1. Short circuit to higher voltage.
2. Defective relay.
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