Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
1DE
Specific fault index within the subsystem.
Frequently asked questions about P21DE
What does P21DE mean?
Cylinder 2 Injector B Circuit Low. The control module detected that the signal in the Cylinder 2 Injector B circuit stayed below the expected operating range.
Is P21DE generic or manufacturer-specific?
P21DE is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P21DE 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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