Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
23B
Specific fault index within the subsystem.
Frequently asked questions about P223B
What does P223B mean?
Reductant Heater F Control Circuit. The control module detected improper operation of the Reductant Heater F Control circuit.
Is P223B generic or manufacturer-specific?
P223B is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P223B 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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