What does code P1503 mean on Audi vehicles?
The alternator load signal from terminal DF is out of range or incorrect.
OBD-II Code Audi
P1503 — Audi — Load Signal from Alternator Terminal DF Range/Performance/Incorrect Signal
The alternator load signal from terminal DF is out of range or incorrect.
Common symptoms
- Dim lights
- low battery charge.
Possible causes
- Faulty alternator.
Initial recommendation
Check charging system.
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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