Volvo All Engines (2017 Emissions) Fault Code: P205A11 PID: ACM Reductant Tank Temperature Sensor
Volvo All Engines (2017 Emissions) Fault Code: P205A11 PID: ACM Reductant Tank 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)
Short circuit to lower voltage
Probable cause
1) Connector
2) Wiring harness
3) Short circuit to ground, Signal wire
4) Temperature Sensor, Aftertreatment diesel exhaust fluid (DEF) tank
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