Cummins ISB4.5 CM2150 Fault Code: 3164 PID: SPN: 4360 FMI: 15 Aftertreatment SCR Intake Temperature – Data Valid But Above Normal Operating Range – Least Severe Level.

Circuit Description
The SCR intake temperature sensor is used by the electronic control module (ECM) to monitor the engine exhaust temperature entering the SCR catalyst. The ECM monitors the voltage on the SIGNAL pin and converts this to a temperature value.

Component Location
The SCR intake temperature sensor is located in the aftertreatment system.

Conditions for Running the Diagnostics
This diagnostic runs continuously when the engine is running.

Conditions for Setting the Fault Codes
The ECM detects that the temperature at the SCR catalyst intake is greater than a calibratible value.

Action Taken When the Fault Code is Active
-The ECM illuminates the amber CHECK ENGINE lamp and/or the malfunction indicator lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code
-To validate the repair, start the engine and let it idle for 1 minute.
-The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
-The ECM will turn off the MIL after three consecutive ignition cycles that the diagnostic runs and passes.
-This fault code and MIL can also be cleared with INSITE™ electronic service tool.

Shop Talk
This fault code is triggered when the temperature at the SCR intake exceeds the maximum allowable temperature for a given engine rating.