Volvo Engine D11L (Tier 4) Fault Code: PID 111 FMI 3 Coolant Level

Volvo Engine D11L (Tier 4) Fault Code: PID 111 FMI 3 Coolant Level

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the voltage is above 21 V(0.88 x Ubat).

SYMPTOM:
Coolant level can not be detected.

POSSIBLE CAUSES:
1. Signal line short-circuited to higher voltage.
2. Sensor fault.