Volvo Engine D11L (Tier 4) Fault Code: PID 45 FMI 4 Inlet Air Heater Status

Volvo Engine D11L (Tier 4) Fault Code: PID 45 FMI 4 Inlet Air Heater Status

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the voltage is below 8 V (0.33 x Ubat).

SYMPTOM:
Induction air is warm due to continuously activated relay.

POSSIBLE CAUSES:
1. Short circuit to lower voltage.
2. Defective relay.