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.
TuningBot DTC Database · v4.37.15
P1784 Diagnostic Trouble Code (3 interpretations)
3 manufacturer-specific interpretations across 3 manufacturers in the TuningBot DTC database.
Hyundai
1 interpretation
Land Rover
1 interpretationThe 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 interpretationThe 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.
Related and nearby codes
How to read P1784
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
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
Understand the system behind this code: Diagnostic Strategy and DTC Logic
