Volvo All Engines (2017 Emissions) Fault Code: P21CA00 PID: EMS Reductant Control Module Supply Voltage
Volvo All Engines (2017 Emissions) Fault Code: P21CA00 PID: EMS Reductant Control Module Supply Voltage
Conditions for diagnostic trouble code (DTC):
1) Active DTCs in EATS System
2) Other DTCs detected may be the reason for the selected DTC to be set. The recommendation is to fault trace and repair the other DTCs first. Repairing the other detected DTCs may change selected DTC to inactive.
Action
1) Aftertreatment Control Module (ACM)
2) Fault trace active diagnostic trouble codes (DTCs) on above components
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