What does code P1603 mean on Audi vehicles?
An internal malfunction has been detected in the control module.
OBD-II Code Audi
P1603 — Audi — Internal Control Module Malfunction
An internal malfunction has been detected in the control module.
Common symptoms
- Limp mode activated.
Possible causes
- Internal module failure.
Initial recommendation
Perform advanced diagnosis.
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
Use the app to combine Audi code P1603 with your vehicle's actual symptoms for more complete diagnostic guidance.
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