What does code P1646 mean on Audi vehicles?
The AWD control module reports stored diagnostic trouble codes.
OBD-II Code Audi
P1646 — Audi — Check DTC Memory of All Wheel Drive Control Module
The AWD control module reports stored diagnostic trouble codes.
Common symptoms
- All-wheel drive system inoperative.
Possible causes
- AWD system fault.
Initial recommendation
Diagnose AWD control module.
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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