Volvo Engine D13F Fault Code: PID 111 FMI 4 Coolant Level

Volvo Engine D13F Fault Code: PID 111 FMI 4 Coolant Level

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers signal line contains a short circuit to a lower voltage.

SYMPTOM:
Coolant level can not be detected.

POSSIBLE CAUSES:
1. Signal line short-circuited to frame ground.
2. Signal line contains a short circuit to a lower voltage.
3. Sensor fault.