Cumminz

Cummins ISB CM850 (2003-06) Fault Code: 1657 PID: SPN: 1326 FMI: 11 Engine Misfire Cylinder 4 – Condition Exists. Engine misfire has been detected in cylinder number 4. If Fault Code 1657 is inactive in the ECM memory and there is no complaint such as ?low power? or ?engine misfire?, it is possible that an intermittent event such as air entering the fuel system following a filter change caused the fault. Inactive counts of Fault Code 1654 should be disregarded unless other performance symptoms are present. The engine coolant temperature must be greater than 71?C [160?F] before this diagnostic will...

Cummins ISB CM850 (2003-06) Fault Code: 1658 PID: SPN: 1327 FMI: 11 Engine Misfire Cylinder 5 – Condition Exists. Engine misfire has been detected in cylinder number 5. If Fault Code 1658 is inactive in the ECM memory and there is no complaint such as ?low power? or ?engine misfire?, it is possible that an intermittent event such as air entering the fuel system following a filter change caused the fault. Inactive counts of Fault Code 1654 should be disregarded unless other performance symptoms are present. The engine coolant temperature must be greater than 71?C [160?F] before this diagnostic will...

Cummins ISB CM850 (2003-06) Fault Code: 1659 PID: SPN: 1328 FMI: 11 Engine Misfire Cylinder 6 – Condition Exists. Engine misfire has been detected in cylinder number 6. If Fault Code 1659 is inactive in the ECM memory and there is no complaint such as ?low power? or ?engine misfire?, it is possible that an intermittent event such as air entering the fuel system following a filter change caused the fault. Inactive counts of Fault Code 1654 should be disregarded unless other performance symptoms are present. The engine coolant temperature must be greater than 71?C [160?F] before this diagnostic will...

Cummins ISB CM850 (2003-06) Fault Code: 1663 PID: SPN: 3241 FMI: 11 Catalyst Inlet Temperature Sensor Swapped with Outlet ? Condition Exists. The inlet and outlet catalyst temperature sensor connections are swapped. Both inlet and outlet exhaust gas temperature sensors have the same part number, so it is possible to get the sensors connected backwards to the engine harness. This fault code is activated when the ECM determines that the temperature reading from the inlet and outlet sensors are reading backwards. The most likely cause of this fault code is that the inlet and exhaust temperature sensor connectors are swapped...

Cummins ISB CM850 (2003-06) Fault Code: 1664 PID: SPN: 3050 FMI: 11 Catalyst Missing ? Condition Exists. The aftertreatment catalyst in the exhaust system is not present. This fault code becomes active when the inlet and outlet temperature sensors do not detect the presence of a catalyst in the aftertreatment system. This can be caused by tampering with the catalyst system, the catalyst has been removed from the vehicle, or a failed catalyst. The catalyst temperature sensors must be reading ambient temperature and the engine must be off for a period of eight hours before this diagnostic will run. If...