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Cummins ISB CM550 (1990-94) Fault Code: 387 PID: SID 232 SPN: FMI: 1 Accelerator Position Sensor Circuit

Cummins ISB CM550 (1990-94) Fault Code: 391 PID: SID 017 SPN: 632 FMI: 11 Fuel Pump Relay Coil Supply Circuit

Cummins ISB CM550 (1990-94) Fault Code: 415-SN PID: 100 SPN: 100 FMI: 1 Oil Pressure - Engine Protection

Cummins ISB CM550 (1990-94) Fault Code: 415-SW PID: 100 SPN: 100 FMI: 1 Oil Pressure - Engine Protection With An Oil Pressure Switch

Cummins ISB CM550 (1990-94) Fault Code: 418 PID: 97 SPN: 97 FMI: 0 Water-In-Fuel Sensor Circuit

Cummins ISB CM550 (1990-94) Fault Code: 422 PID: 111 SPN: 111 FMI: 2 Colant Level Sensor Circuit Coolant Level Sensor Circuit

Cummins ISB CM550 (1990-94) Fault Code: 429 PID: 97 SPN: 97 FMI: 4 Water-In-Fuel (WIF) Sensor Circuit

Cummins ISB CM550 (1990-94) Fault Code: 431 PID: 91 SPN: 91 FMI: 2 Idle Validation Switch (IVS) Circuit

Cummins ISB CM550 (1990-94) Fault Code: 431 PID: 91 SPN: 91 FMI: 4 Idle Validation Switch (IVS) Circuit

Cummins ISB CM550 (1990-94) Fault Code: 432 PID: 91 SPN: 91 FMI: 13 Accelerator Pedal Circuit (ISS)