Cummins ISB6.7 CM2350 (2013-17) Fault Code: 2962 PID: 412 SPN: 412 FMI: 16 Exhaust Gas Recirculation Temperature- Data Valid But Above Normal Operational Range- Moderately Severe Level
Cummins ISB6.7 CM2350 (2013-17) Fault Code: 2962 PID: 412 SPN: 412 FMI: 16 Exhaust Gas Recirculation Temperature- Data Valid But Above Normal Operational Range- Moderately Severe Level
Circuit Description
The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used by the ECM for the engine protection system and engine emissions control.
Component Location
The EGR temperature sensor is located on the EGR connection tube between the EGR cooler and the air intake connection.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes
The Engine Control Module (ECM) detected the EGR temperature was greater than 250?C [482?F] for more than 5 seconds.
Action Taken When the Fault Code is Active
1)The ECM illuminates the amber CHECK ENGINE lamp immediately when the diagnostic runs and fails.
2)Exhaust Gas Recirculation (EGR) valve operation will be disabled.
3)Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.
Conditions for Clearing the Fault Code
1)To validate the repair using a Diagnostic Road Test, utilize a route that incorporates both stop and go city type driving and steady state highway type driving. It may be necessary to load the unit for certain diagnostics in the ECM to run.
2)To validate the repair using a Chassis Dynamometer, utilize a routine that incorporates acceleration and motoring events, steady state highway type operation, and load. This will simulate normal driving and allow the diagnostics in the ECM to run.
3)The fault code status displayed by INSITE? electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
4)The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
5)The Reset All Faults command in INSITE? electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Possible causes:
1) A fouled EGR cooler
2) Plugged or restricted EGR differential pressure sensor ports
3) A damaged EGR valve
4) A low reading from the EGR differential pressure sensor
5) A low reading for the EGR valve position sensor
6) High exhaust temperatures
7) Low coolant level
8) High coolant temperature
9) An incorrect coolant/water mixture
10) A stuck closed variable geometry turbocharger.
Note: This fault code will most likely not be active with no load in the shop. The engine must be loaded to trigger this fault code.
