Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 2961 PID: PID 412 SPN: 412 FMI: 15 Exhaust Gas Recirculation Temperature- Data valid But Above Normal Operational Range- Least 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 210°C [410°F] for more than 5 seconds.

Action Taken When the Fault Code is Active
The ECM logs the fault code immediately when the diagnostic runs and fails.
Engine torque will be reduced.
Conditions for Clearing the Fault Code
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.
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.
The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
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.

Shop Talk
Possible causes of this fault code include:

Plugged or restricted EGR differential pressure sensor ports
Damaged EGR differential pressure tubes
A malfunctioning EGR valve
A low reading from the EGR differential pressure sensor
A low reading for the EGR valve position sensor
High exhaust temperatures
Low coolant level
High coolant temperature
An incorrect coolant/water mixture
A stuck closed variable geometry turbocharger
A fouled EGR cooler.
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.

Possible Cause:
1) EGR temperature sensor failure
2) Coolant level
3) EGR cooler failure
4) ECM calibration