Hours: 07–23 daily

TuningBot DTC Database · v4.37.15

P1391 Honda - G - sensor - performance

Manufacturer-specific interpretation for Honda. All interpretations of P1391

P · PowertrainEngineOBD2

What P1391 means

P1391
G - sensor - performance Honda · engine Data confidence 62%

The control module judged the G - sensor - performance behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Honda.

Possible causes

  • Seal damaged/missing
  • incorrectly installed
  • wiring
  • G - sensor
  • ECM

Related and nearby codes

How to read P1391

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

391

Specific fault index within the subsystem.

Frequently asked questions about P1391

What does P1391 mean?

G - sensor - performance. The control module judged the G - sensor - performance behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Honda.

Is P1391 generic or manufacturer-specific?

P1391 is a manufacturer-specific code. In this database it is documented for: Honda. The same number can mean something different on other brands.

Can TuningBot remove P1391 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.

Other file services

ECU tuningStage 1 dyno results for Honda engines See the results →

← Search the full DTC database