Cummins ISB CM850 (2003-06) Fault Code: 197 PID: 111 SPN: 111 FMI: 1 Coolant Level – Data Valid but Below Normal Operational Range – Moderately Severe Level. Low engine coolant level detected. This fault code goes active when the coolant level inside the radiator top tank or surge tank drops below the sensor level. Fill the top tank with coolant. Possible repairs: 1)Add coolant to the engine. Cummins ISB CM850 (2003-06) Fault Code: 196 (3 wires) PID: 111 SPN: 111 FMI: 4 Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected...

Cummins ISB CM850 (2003-06) Fault Code: 1992 PID: SPN: 190 FMI: 0 Engine Crankshaft Speed/Position – Data Valid but Above Normal Operational Range – Moderately Severe Level. Engine crankshaft speed/position SIGNAL indicates engine speed above engine protection limit. This fault code is only applicable to engines powering generator sets. Possible causes: 1)External fuel sources drawn into the intake air passage2)Reverse powering (motoring) of the engine3)Tampering of the engine crankshaft speed/position and engine camshaft speed/position sensors. Inspect the intake manifold for sources of flammable vapors. Check the turbocharger seals to verify that there are no oil leaks. Inspect the engine crankshaft...

Cummins ISB CM850 (2003-06) Fault Code: 2183 PID: SID 28 SPN: 1072 FMI: 4 Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the engine brake solenoid number 1 signal circuit. Possible causes of this fault code include a short circuit to ground in the engine harness, connector, or engine brake solenoids. On-Board Diagnostics (OBD) Information: 1)The ECM illuminates the appropriate amber or red lamp when the diagnostic runs and fails.2)The ECM turns OFF the appropriate fault lamp when the diagnostic runs and passes. Possible repairs: 1)Repair or replace the...

Cummins ISB CM850 (2003-06) Fault Code: 2185 PID: SID 232 SPN: FMI: 3 Sensor Supply Voltage 4 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at +5 volt sensor supply circuit to the accelerator pedal position sensor. This fault is logged when the ECM senses more than +5.25 volts on the accelerator pedal or lever position +5 volt supply line. This can be caused by a short circuit to a voltage source in the OEM harness or a short circuit to an actuator signal circuit that is greater than +5 volts. Possible repairs: 1)Repair or...

Cummins ISB CM850 (2003-06) Fault Code: 2186 PID: SID 232 SPN: FMI: 4 Sensor Supply Voltage 4 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at +5 VDC sensor supply circuit to the accelerator pedal position sensor. For Marine application, the accelerator lever is typically located in the engine room or at the helm. Low voltage on the +5 VDC supply line can be caused by a short circuit to ground in the supply line, a short circuit between the supply line and return circuit, a failed accelerator, or a failed ECM power supply. Possible...