Volvo Engine D11L (Tier 4) Fault Code: PID 251 FMI 9 Clock

Volvo Engine D11L (Tier 4) Fault Code: PID 251 FMI 9 Clock

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that time data is missing or is not arriving often enough.

SYMPTOM:
None

POSSIBLE CAUSES:
1. Defective information bus (J1708/ J1587).
2. Open circuit on bus communication (cable harness).