What does code P1785 mean on Audi vehicles?
The upshift/downshift control wire is shorted to battery positive (B+), preventing proper manual or Tiptronic shifting.
OBD-II Code Audi
P1785 — Audi — Shift Up/Down Wire Short to B+
The upshift/downshift control wire is shorted to battery positive (B+), preventing proper manual or Tiptronic shifting.
Common symptoms
- Manual shift mode not working
- incorrect gear selection
Possible causes
- Damaged wiring harness
- short circuit to battery positive
Initial recommendation
Inspect shift control circuit for shorts to B+ and repair wiring as necessary.
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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