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TuningBot DTC Database · v4.37.15

P1791 Diagnostic Trouble Code (4 interpretations)

4 manufacturer-specific interpretations across 4 manufacturers in the TuningBot DTC database.

P · PowertrainEngineOBD2

Hyundai

1 interpretation
P1791
Throttle Position Sensor (TPS) Input Circuit Malfunction Hyundai · engine Data confidence 62%

The control module detected improper operation of the Throttle Position Sensor (TPS) Input circuit. This is the manufacturer-specific definition used by Hyundai.

Jaguar

1 interpretation
P1791
Ignition Supply Malfunction Jaguar · engine Data confidence 62%

The control module detected improper operation of the Ignition Supply. This is the manufacturer-specific definition used by Jaguar.

Nissan

1 interpretation
P1791
TP Electric Circuit Nissan · engine Data confidence 62%

The control module detected improper operation of the TP Electric circuit. This is the manufacturer-specific definition used by Nissan.

VAG

1 interpretation
P1791
Transmission Range Display Circuit Short To Ground VAG · transmission Data confidence 62%

The control module detected a short circuit to ground in the Transmission Range Display circuit. This is the manufacturer-specific definition used by Volkswagen.

Applies to Volkswagen

Related and nearby codes

How to read P1791

P

Powertrain: engine, transmission and driveline systems.

1

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

791

Specific fault index within the subsystem.

Frequently asked questions about P1791

What does P1791 mean?

Diagnostic Trouble Code (4 interpretations). The control module detected improper operation of the Throttle Position Sensor (TPS) Input circuit. This is the manufacturer-specific definition used by Hyundai.

Is P1791 generic or manufacturer-specific?

P1791 is a manufacturer-specific code. In this database it is documented for: Hyundai, Jaguar, Nissan, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1791 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

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