MasterTuning Fault code dictionary (DTC)

P1151 — Manufacturer-defined powertrain fault P1151

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningThe engine control unit has flagged a specific fault code classified as manufacturer-defined for the powertrain system. Because this code does not follow standard generic OBD-II definitions, its exact meaning depends entirely on the vehicle's make, model, and year. It usually points to an anomaly in the fuel delivery, air intake, or sensor feedback loop that the manufacturer programmed this specific system to catch.
FamilyPowertrain (P)

Typical symptoms

Check Engine light illuminated on the dashboard
Possible rough idling or engine hesitation
Possible reduced engine performance or change in fuel consumption

Common causes

Manufacturer-specific sensor signal out of expected range
Wiring or connector issue related to the affected powertrain component
Internal fault within the engine control unit software or hardware

What to do

Since this is a manufacturer-specific code, you should have a professional scan tool read the exact sub-codes and freeze-frame data for your specific vehicle make and model. Check the wiring harness and connectors in the suspected system first before replacing any parts.

Frequently asked questions

What does code P1151 mean?

Manufacturer-defined powertrain fault P1151. The engine control unit has flagged a specific fault code classified as manufacturer-defined for the powertrain system. Because this code does not follow standard generic OBD-II definitions, its exact meaning depends entirely on the vehicle's make, model, and year. It usually points to an anomaly in the fuel delivery, air intake, or sensor feedback loop that the manufacturer programmed this specific system to catch.

Can I keep driving with code P1151 active?

With caution: limp mode possible, have it checked soon

Common causes — P1151

Manufacturer-specific sensor signal out of expected range Wiring or connector issue related to the affected powertrain component Internal fault within the engine control unit software or hardware

How do you fix code P1151?

Since this is a manufacturer-specific code, you should have a professional scan tool read the exact sub-codes and freeze-frame data for your specific vehicle make and model. Check the wiring harness and connectors in the suspected system first before replacing any parts.

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