Volvo All Engines (2013 Emissions) Fault Code: P20C400 PID: ACM Aftertreatment Reagent Hose Heater 3 Short Circuit High

Volvo All Engines (2013 Emissions) Fault Code: P20C400 PID: ACM Aftertreatment Reagent Hose Heater 3 Short Circuit High

Conditions for diagnostic trouble code (DTC)
The voltage at pin A137:24 is above normal value

Observable symptoms
Ammonia smell can occur if the aftertreatment diesel exhaust fluid (DEF) warmed too much

Probable cause
1) Connector
2) Wiring harness
3) Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3

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