Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
091
Specific fault index within the subsystem.
Frequently asked questions about P0091
What does P0091 mean?
Fuel Pressure Regulator Control Circuit Low. The control module detected that the signal in the Fuel Pressure Regulator Control circuit stayed below the expected operating range.
Is P0091 generic or manufacturer-specific?
P0091 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0091 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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