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Volvo Engine D12D AE E3 (Tier 3) Fault Code: PID91 FMI 9 Accelerator Pedal Position, %

Volvo Engine D12D AE E3 (Tier 3) Fault Code: PID91 FMI 9 Accelerator Pedal Position, %

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the throttle pedal signal is missing or is not arriving often enough.

SYMPTOM:
None

POSSIBLE CAUSES:
1. Defective throttle position sensor.
2. Defective information bus (SAE J1708).
3. Defective vehicle control unit (V-ECU).