Volvo All Engines (2010 Emissions) Fault Code: SPN 412 FMI 4 PID: Engine Exhaust Gas Recirculation Temperature

This function is used to check if the Exhaust Gas Recirculation (EGR) temperature sensor is working and check the status on the EGR cooler. If the sensor should show a value above limit due to extreme driving or malfunction in the cooler, the Engine Control Module (ECM) will derate the engine to avoid damage.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:48 is less than 0.024?V

Observable symptoms
1) Engine de-rated

Probable cause
1) Connector
2) Temperature sensor, EGR
3) Open circuit, Ground wire
4) Short circuit to higher voltage, Signal wire
5) Wiring harness
6) Engine control module (ECM)