VOLVOUU Engine D13F Fault Code: PID 131 FMI 2 Exhaust Back Pressure
CONTROL UNIT:
Engine ECU
DETECTION CONDITIONS:
The engine control unit (E-ECU) registers plausibility fault too small pressure difference between inactivated and activated exhaust brake.
SYMPTOM:
1. Reduced engine brake power.
2. Reduced engine power.
POSSIBLE CAUSES:
1. Exhaust brake out of order.
2. Sensor fault.
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