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TuningBot DTC Database · v4.37.15

P1784 Diagnostic Trouble Code (3 interpretations)

3 manufacturer-specific interpretations across 3 manufacturers in the TuningBot DTC database.

P · PowertrainEngineOBD2

Hyundai

1 interpretation
P1784
EOP 3 - Phase Wiring line open Hyundai · engine Data confidence 62%

The control module detected a fault associated with the EOP 3 - Phase Wiring line open circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.

Land Rover

1 interpretation
P1784
Transmission - mechanical fault Land Rover · engine Data confidence 62%

The control module registered the fault condition described as "Transmission - mechanical fault". This is the manufacturer-specific definition used by Land Rover.

Possible causes

Transmission mechanical fault

VAG

1 interpretation
P1784
Shift Up Down Wire Open Short To Ground VAG · engine Data confidence 62%

The control module detected a short circuit to ground in the Shift Up Down Wire Open circuit. This is the manufacturer-specific definition used by Volkswagen.

Applies to Volkswagen

Related and nearby codes

How to read P1784

P

Powertrain: engine, transmission and driveline systems.

1

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

784

Specific fault index within the subsystem.

Frequently asked questions about P1784

What does P1784 mean?

Diagnostic Trouble Code (3 interpretations). The control module detected a fault associated with the EOP 3 - Phase Wiring line open circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.

Is P1784 generic or manufacturer-specific?

P1784 is a manufacturer-specific code. In this database it is documented for: Hyundai, Land Rover, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1784 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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