Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
04A
Specific fault index within the subsystem.
Frequently asked questions about P204A
What does P204A mean?
Reductant Pressure Sensor Circuit. The control module detected improper operation of the Reductant Pressure circuit.
Is P204A generic or manufacturer-specific?
P204A is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P204A at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
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