Volvo All Engines (2017 Emissions) Fault Code: P040A64 PID: EMS Exhaust Gas Recirculation Temperature Sensor “A”
Volvo All Engines (2017 Emissions) Fault Code: P040A64 PID: EMS Exhaust Gas Recirculation Temperature Sensor “A”
Circuit description
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)
Temperature above normal, EGR System
Observable symptoms
Engine de-rated
Probable cause
1) Connector
2) Wiring harness
3) Temperature sensor, EGR
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