Volvo All Engines (2017 Emissions) Fault Code: P204264 PID: ACM Reductant Temperature Sensor
Volvo All Engines (2017 Emissions) Fault Code: P204264 PID: ACM Reductant Temperature Sensor
Circuit description
Aftertreatment Control Module (ACM) monitors DEF tank temperature and uses it to control the Aftertreatment DEF Tank Heater valve to keep the DEF from freezing.
This temperature monitoring is also used to avoid stopped DEF dosing due to high DEF tank temperatures. If the DEF temperature is too high, reverse flow will be activated, if the temperature stays high for a short duration, a DTC is set.
Conditions for diagnostic trouble code (DTC)
Signal Plausibility Failure
Probable cause
1) Reductant Temperature Sensor
2) Aftertreatment Diesel Exhaust Fluid (DEF) Pump
Detailed information
To fully verify the repair it may be necessary to activate vehicle functions or perform a test drive
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