Volvo Engine D12D AE E3 (Tier 3) Fault Code: PID111 FMI 1 Coolant Level

Volvo Engine D12D AE E3 (Tier 3) Fault Code: PID111 FMI 1 Coolant Level

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers low coolant level.

SYMPTOM:
None

POSSIBLE CAUSES:
1. Low coolant level.
2. Signal line contains a short circuit to a lower voltage.