Powertrain: engine, transmission and driveline systems.
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Generic SAE-standard code: same meaning on every make.
29A
Specific fault index within the subsystem.
Frequently asked questions about P029A
What does P029A mean?
Cylinder 1 - Fuel Trim at Max Limit. The control module detected that the monitored Cylinder 1 - Fuel Trim at value reached its permissible limit.
Is P029A generic or manufacturer-specific?
P029A is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P029A 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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