Volvo Engine D13F Fault Code: PID 131 FMI 2 Exhaust Back Pressure

Volvo 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.