Cummins ISM CM870 (2003-06) Fault Code: 2363 PID: S29 SPN: 1073 FMI: 4/4 Engine Brake Actuator Driver Output 2 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the engine brake solenoid number 2 signal circuit.

Possible causes:

1)Short circuit to ground in the engine harness, connectors, or engine brake solenoids
2)Failed ECM.

Possible repairs:

1)Remove the internal actuator harness.
2)Replace the engine brake solenoid.
3)Replace the ECM.

Cummins ISM CM870 (2003-06) Fault Code: 2362 PID: S28 SPN: 1072 FMI: 4/4 Engine Brake Actuator Circuit Number 1 - shorted low. Low voltage detected at the engine brake solenoid Number 1 signal circuit.

Cummins ISM CM870 (2003-06) Fault Code: 2359 PID: P411 SPN: 411 FMI: 0/16 EGR Differential Pressure Sensor - Data Valid but Above Normal Operating Range - Moderately Severe Level. EGR differential pressure sensor failed automatic calibration procedure or EGR differential pressure reading not valid for engine operating conditions.

Cummins ISM CM870 (2003-06) Fault Code: 2357 PID: S146 SPN: 2791 FMI: 7/7 EGR Valve Control Circuit - Mechanical System Not Responding or Out of Adjustment. The exhaust gas recirculation (EGR) valve motor has exceeded the duty cycle limit, indicating a stuck open EGR valve.

Cummins ISM CM870 (2003-06) Fault Code: 2356 PID: SPN: 2792 FMI: 4/4 Turbocharger Control Shutoff Valve - shorted high. Low voltage detected at turbocharger control shutoff valve circuit.

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