Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
401
Specific fault index within the subsystem.
Frequently asked questions about P0401
What does P0401 mean?
Exhaust Gas Recirculation Flow Insufficient Detected. The control module detected that the measured Exhaust Gas Recirculation flow was lower than the value expected while operation was commanded.
Is P0401 generic or manufacturer-specific?
P0401 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0401 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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