What does code P1788 mean on Audi vehicles?
The reversing light circuit is shorted to battery positive, causing the reverse lights to remain on continuously.
OBD-II Code Audi
P1788 — Audi — Reversing Light Circuit Short to B+
The reversing light circuit is shorted to battery positive, causing the reverse lights to remain on continuously.
Common symptoms
- Reverse lights always on
Possible causes
- Damaged wiring
- short to battery positive
Initial recommendation
Inspect reversing light circuit for shorts to B+ and repair wiring.
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.
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