What does code P1509 mean on Mazda vehicles?
A malfunction has been detected in bypass air solenoid 2 circuit affecting idle control.
OBD-II Code Mazda
P1509 — Mazda — Bypass Air Solenoid 2 Circuit
A malfunction has been detected in bypass air solenoid 2 circuit affecting idle control.
Common symptoms
- Idle instability
Possible causes
- Faulty bypass air solenoid
Initial recommendation
Test bypass air solenoid 2 and inspect wiring.
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.
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