What does code P1403 mean on Volkswagen vehicles?
The ECU detects a discrepancy between commanded and actual operation of the exhaust gas recirculation (EGR) system.
OBD-II Code Volkswagen
P1403 — Volkswagen — EGR System Control Difference
The ECU detects a discrepancy between commanded and actual operation of the exhaust gas recirculation (EGR) system.
Common symptoms
- Check engine light
- emissions-related issues
Possible causes
- EGR control malfunction
- sticking EGR valve
- control system deviation
Initial recommendation
Inspect EGR system operation, valve movement, and control signals.
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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