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.
1)Air intake leaks between the air filter and turbocharger, allowing warm underhood air to enter the turbocharger compressor inlet
2)Incorrect turbocharger compressor inlet temperature sensor output
3)Incorrect output of sensors used to calculate turbocharger compressor outlet temperature, such as ambient air pressure and turbocharger speed.
NOTE: This code will most likely not be active with no load in the shop. The engine must be loaded to trip this fault code and determine if the failure has been found and fixed.
1)Replace the variable geometry turbocharger.
2)Replace the turbocharger compressor inlet temperature sensor.
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.
Cummins ISB CM850 (2003-06) Fault Code: 2345 (ISC) PID: 103 SPN: 103 FMI: 10 Turbocharger Speed Invalid Rate of Change Detected – Abnormal Rate of Change. The turbocharger speed sensor has detected an erroneous speed value.
Cummins ISB CM850 (2003-06) Fault Code: 2345 (ISB) PID: 103 SPN: 103 FMI: 10 Turbocharger speed – invalid rate of change detected. The turbocharger speed sensor has detected an erroneous speed value.
Cummins ISB CM850 (2003-06) Fault Code: 2322 PID: SID 64 SPN: 723 FMI: 2 Backup Engine Speed/Position Sensor Number 2 – Data Erratic, Intermittent, or Incorrect. Camshaft engine speed sensor intermittent synchronization.
Cummins ISB CM850 (2003-06) Fault Code: 2321 PID: 190 SPN: 190 FMI: 2 Engine Crankshaft Speed/Position – Data Erratic, Intermittent, or Incorrect. Crankshaft engine speed sensor intermittent synchronization.
