Cumminz

Cummins ISB CM850 (2003-06) Fault Code: 1671 PID: SPN: 1761 FMI: 1 Catalyst Tank Level ? Data Valid but Below Normal Operational Range ? Moderately Severe Level. Low catalyst solution level has been detected in the catalyst solution tank. Fault code 1671 is triggered when low catalyst solution level has been detected in the catalyst solution tank. Add catalyst solution to the tank. This fault code is only a warning for low catalyst tank solution level. On-Board Diagnostic (OBD) Information: 1)The ECM illuminates the appropriate amber or red fault lamp when the diagnostic runs and fails.2)The ECM turns off the...

Cummins ISB CM850 (2003-06) Fault Code: 1673 PID: SPN: 1761 FMI: 1 Catalyst Tank Level ? Data Valid but Below Normal Operational Range ? Most Severe Level. No catalyst solution has been detected in the catalyst solution tank. Fault code 1673 is triggered when the catalyst solution level sensor has detected that the catalyst tank is empty. Catalyst solution may still be visible inside the tank when this fault code is active. Add catalyst solution to the tank. On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines): 1)The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.2)The...

Cummins ISB CM850 (2003-06) Fault Code: 1674 PID: SPN: 3249 FMI: 4 Exhaust Gas Temperature 2 Circuit ? Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst exhaust temperature sensor circuit. The catalyst outlet temperature sensor shares return wires in the engine harness with other sensors. A shorted return can cause multiple fault codes to be active. Possible causes: 1)Signal shorted to ground in the harness2)Signal shorted to return or ground in the sensor. On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines): 1)The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs...

Cummins ISB CM850 (2003-06) Fault Code: 1675 PID: SPN: 3249 FMI: 3 Exhaust Gas Temperature 2 Circuit ? Voltage Above Normal, or Shorted to Low Source. High signal voltage detected at the catalyst outlet temperature sensor circuit. Catalyst outlet temperature sensor shares return wires in the engine harness with other sensors. A shorted return can cause multiple fault codes to be active. Possible causes: 1)Open return circuit in the harness, connectors, or sensor.2)Open signal circuit or shorted to a voltage source. On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines): 1)The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic...

Cummins ISB CM850 (2003-06) Fault Code: 1676 PID: SPN: 3249 FMI: 2 Exhaust Gas Temperature 2 ? Data Erratic, Intermittent, or Incorrect. The exhaust gas temperature #2 sensor is not changing with engine operating conditions. This diagnostic runs when the exhaust gas temperature sensors are compared to other engine temperatures during engine operation. The engine coolant temperature must be above 140?F before the diagnostic will run. If the value of the exhaust gas temperature #2 does not match the engine operating conditions, this fault code is logged. Possible causes: 1)Stuck in-range exhaust gas temperature #2 sensor2)High resistance in the exhaust...