Cummins ISB CM850 (2003-06) Fault Code: 2348 PID: 27 SPN: 27 FMI: 13 EGR valve failed automatic calibration procedure - out of calibration.

A possible cause of this fault could be an EGR valve assembly internal failure causing the EGR valve to not close fully.

When troubleshooting inactive counts of this fault code, running the EGR Valve Test in INSITE? electronic service tool could help identify a stuck EGR valve.

Possible repairs:

1)Replace the engine harness.
2)Replace the EGR valve assembly.
3)Replace the ECM.

Cummins ISB CM850 (2003-06) Fault Code: 2347 (ISC) PID: SPN: 2790 FMI: 15 Turbocharger Compressor Outlet Air Temperature (Calculated) - Data Valid but Above Normal Range - least severe level.

Cummins ISB CM850 (2003-06) Fault Code: 2347 (ISB) PID: SID 151 SPN: 611 FMI: 15 Turbocharger compressor outlet temperature - data above normal. High turbocharger compressor outlet temperature has been calculated by the ECM.

Cummins ISB CM850 (2003-06) Fault Code: 2346 (ISC) PID: SPN: 2789 FMI: 15 Turbocharger Turbine Inlet Temperature (Calculated) - Data Valid but Above Normal Operational Range - Least Severe Level. Turbocharger turbine inlet temperature has exceeded the engine protection limit.

Cummins ISB CM850 (2003-06) Fault Code: 2346 (ISB) PID: SPN: 2789 FMI: 15 Exhaust gas temperature - data above normal. High exhaust temperature has been calculated by the electronic control system.

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