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TuningBot DTC Database · v4.37.15

P1751 VAG - Diagnostic Trouble Code (2 interpretations)

Manufacturer-specific interpretation for VAG. All interpretations of P1751

P · PowertrainTransmissionOBD2

What P1751 means

P1751
Transmission control module (TCM) - supply voltage high VAG · transmission Data confidence 62%

The control module detected that the Transmission control module (TCM) - supply voltage stayed above the expected range. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring
  • alternator
  • battery(s)
Applies to Audi
P1751
Power Supply Voltage High VAG · battery Data confidence 62%

The control module detected that the Power Supply voltage stayed above the expected range. This is the manufacturer-specific definition used by Volkswagen.

Applies to Volkswagen

Related and nearby codes

How to read P1751

P

Powertrain: engine, transmission and driveline systems.

1

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

751

Specific fault index within the subsystem.

Frequently asked questions about P1751

What does P1751 mean?

Diagnostic Trouble Code (2 interpretations). The control module detected that the Transmission control module (TCM) - supply voltage stayed above the expected range. This is the manufacturer-specific definition used by Audi.

Is P1751 generic or manufacturer-specific?

P1751 is a manufacturer-specific code. In this database it is documented for: VAG. The same number can mean something different on other brands.

Can TuningBot remove P1751 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 VAG engines See the results →

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