VOLVOUU All Engines (2017 Emissions) Fault Code: P20A611 PID: ACM Reductant Injection Air Pressure Control Valve Control
Conditions for diagnostic trouble code (DTC)
The voltage at pin A174.A:21 is below normal value
Diagnostic operating conditions
Ignition key in ON position
Observable symptoms
Uncontrolled air consumption
Probable cause
1) Short circuit to ground
2) Connector
3) Wiring harness
4) Reductant Injection Air Pressure Control Valve Control
5) Aftertreatment Control Module (ACM)
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