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.

Possible causes:

1)Short circuit to ground in the engine harness, connectors, or control valve.

Possible repairs:

1)Replace the turbocharger control shutoff valve.
2)Replace the ECM.
3)Repalce the engine harness.

Cummins ISM CM870 (2003-06) Fault Code: 2355 PID: SPN: 2792 FMI: 3/3 VGT Air Control Shutoff Valve Circuit - shorted high. Open circuit or high signal voltage detected at the turbocharger control shutoff valve circuit.

Cummins ISM CM870 (2003-06) Fault Code: 2353 PID: S146 SPN: 2791 FMI: 6/6 EGR Valve Control Circuit - Current Above Normal or Grounded Circuit. A short circuit to ground has been detected in the exhaust gas recirculation (EGR) valve motor circuit.

Cummins ISM CM870 (2003-06) Fault Code: 2352 PID: S146 SPN: 2791 FMI: 3/3 EGR Valve Control Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at the EGR valve motor circuit.

Cummins ISM CM870 (2003-06) Fault Code: 2351 PID: S146 SPN: 2791 FMI: 4/4 EGR Valve Control Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the EGR valve motor circuit.

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