Cummins ISX CM870 (2003-06) Fault Code: 249 PID: P171 SPN: 171 FMI: 3/3 Ambient Air Temperature Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at ambient air temperature circuit.
Cummins ISX CM870 (2003-06) Fault Code: 254 PID: S017 SPN: 632 FMI: 4/4 Fuel Shutoff Valve Circuit - Shorted Low. Low voltage detected at fuel shutoff valve circuit.
Cummins ISX CM870 (2003-06) Fault Code: 255 PID: S071 SPN: 632 FMI: 3/3 Engine Fuel Shutoff Valve Drive Circuit - Voltage Above Normal or Shorted to High Source. Open circuit or short to voltage source detected at fuel shutoff valve circuit.
Cummins ISX CM870 (2003-06) Fault Code: 256 PID: P171 SPN: 171 FMI: 4/4 Ambient Air Temperature Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at ambient air temperature circuit.
Cummins ISX CM870 (2003-06) Fault Code: 259 PID: S017 SPN: 632 FMI: 7/7 The ECM detected that the fuel shutoff valve is stuck open mechanically or leaking.
Cummins ISX CM870 (2003-06) Fault Code: 263 PID: P174 SPN: 174 FMI: 3/3 Engine Fuel Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine fuel temperature circuit.
Cummins ISX CM870 (2003-06) Fault Code: 265 PID: P174 SPN: 174 FMI: 4/4 Engine Fuel Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine fuel temperature circuit.
Cummins ISX CM870 (2003-06) Fault Code: 284 PID: S221 SPN: 1043 FMI: 4/4 Engine Speed Sensor Supply Voltage Circuit - shorted low. Incorrect voltage detected on the ECM voltage supply line to the engine speed sensor.
Cummins ISX CM870 (2003-06) Fault Code: 285 PID: S231 SPN: 639 FMI: 9/9 The ECM expected information from a multiplexed device but did not receive it soon enough or did not receive it at all.
Cummins ISX CM870 (2003-06) Fault Code: 286 PID: S231 SPN: 639 FMI: 13/13 The ECM expected information from a multiplexed device but only received a portion of the necessary information.