What does code P1784 mean on Audi vehicles?
The upshift/downshift control wire is open or shorted to ground, affecting manual or Tiptronic shifting.
OBD-II Code Audi
P1784 — Audi — Shift Up/Down Wire Open or Short to Ground
The upshift/downshift control wire is open or shorted to ground, affecting manual or Tiptronic shifting.
Common symptoms
- Manual shift mode not working
- incorrect gear selection
Possible causes
- Faulty wiring
- damaged selector switch
- poor electrical connection
Initial recommendation
Inspect shift control wiring, connectors and selector mechanism.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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