Volvo All Engines (2017 Emissions) Fault Code: P20C111 PID: ACM Reductant Heater “C” Control
Volvo All Engines (2017 Emissions) Fault Code: P20C111 PID: ACM Reductant Heater “C” Control
Conditions for diagnostic trouble code (DTC)
The voltage at pin A137:24 is below normal value
Observable symptoms
Ammonia smell can occur if the aftertreatment diesel exhaust fluid (DEF) warmed too much
Probable cause
1) Short circuit to ground, Control wire (-)
2) Wiring harness
3) Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3
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