Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
0A3
Specific fault index within the subsystem.
Frequently asked questions about P20A3
What does P20A3 mean?
Reductant purge control valve - circuit high. The control module detected that the signal in the Reductant purge control valve circuit stayed above the expected operating range.
Is P20A3 generic or manufacturer-specific?
P20A3 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P20A3 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
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