What does code P1621 mean on Mazda vehicles?
The ECU detects a malfunction in the immobilizer system, preventing engine start authorization.
OBD-II Code Mazda
P1621 — Mazda — Immobilizer System Fault
The ECU detects a malfunction in the immobilizer system, preventing engine start authorization.
Common symptoms
- No start condition
Possible causes
- Security system issue
- immobilizer module fault
Initial recommendation
Check immobilizer system and key programming.
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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