Cummins ISB CM850 (2003-06) Fault Code: 1699 PID: SPN: 1761 FMI: 2 Catalyst Tank Level Sensor – Data Erratic, Intermittent, or Incorrect. Catalyst solution level is not changing with engine operating conditions. This fault code is triggered when the catalyst solution level reading in the catalyst tank does not change with engine operating conditions. If the catalyst dosing control unit indicates that catalyst injection has occurred, but the catalyst tank level has not changed, this fault code will be triggered. This fault will also be triggered if catalyst injection has not occurred, but a drop in the level of the...

Cummins ISB CM850 (2003-06) Fault Code: 1711 PID: SPN: 3361 FMI: 9 Dosing Control Unit Data Link ? Abnormal Update Rate. Data Link communications between the ECM and the Dosing Control Unit have been interrupted. Possible causes: 1)Loss of battery voltage to the Dosing Control Unit2)Loss of battery ground to the Dosing Control Unit3)Loss of keyswitch input to the Dosing Control Unit4)Shorted or open J1939 data link wiring between the Dosing Control Unit and the primary engine ECM5)Failed Dosing Control Unit6)The external OEM controlling device has failed or can no longer transmit on the data link. On-Board Diagnostics (OBD) Information...

Cummins ISB CM850 (2003-06) Fault Code: 1712 PID: SPN: 3363 FMI: 1 Catalyst Tank Heater Circuit ? Data Valid But Below Normal Operating Range ? Moderately Severe Level. The catalyst solution temperature did not increase when the catalyst tank heater was commanded on. This fault code is triggered when the catalyst tank heater is commanded on by the engine ECM, but no corresponding temperature increase in the catalyst tank temperature was recorded by the catalyst temperature sensor. Possible causes: 1)Failed catalyst tank heater relay2)Faulty power supply to the catalyst tank heater3)Faulty ground circuit to the catalyst tank heater4)Faulty wiring between...

Cummins ISB CM850 (2003-06) Fault Code: 1713 PID: SPN: 3363 FMI: 0 Catalyst Tank Heater Circuit – Data Valid But Above Normal Operating Range – Moderately Severe Level. The catalyst tank heater is continuously in the on position. This fault code is triggered when the catalyst tank heater is determined to be in the on position when the engine ECM is commanding the heater to be in the off position. To determin if the temperature sensors are reading a sensible value, they can be compared to each other at keyswitch ON, after an 8-hour period with the engine not running....

Cummins ISB CM850 (2003-06) Fault Code: 1716 PID: SPN: 411 FMI: 11 Auxiliary Temperature Sensor Input 1 Circuit – Root Cause Not Known. High temperature detected by the OEM temperature sensor or by the engine coolant temperature sensor. This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. On-Board Diagnostics (OBD) information: 1)The ECM illuminates the appropriate amber or red fault lamp when the diagnostic runs and fails2)The ECM turns off the appropriate fault lamp when the diagnostic runs and passes. Possible repairs: 1)Replace the ECM.2)Replace the OEM harness. Cummins ISB CM850 (2003-06)...