What does code P1408 mean on Mazda vehicles?
The ECU detects EGR flow outside the expected range during the key-on engine-running self-test.
OBD-II Code Mazda
P1408 — Mazda — EGR System Flow Out of Key On Engine Running Self-Test Range
The ECU detects EGR flow outside the expected range during the key-on engine-running self-test.
Common symptoms
- Check engine light
- emission control malfunction
Possible causes
- EGR valve malfunction
- restricted passages
Initial recommendation
Inspect EGR valve operation and clean EGR passages.
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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