What does code P1490 mean on Infiniti vehicles?
The ECU detects a malfunction in the vacuum cut valve bypass electrical circuit.
OBD-II Code Infiniti
P1490 — Infiniti — Vacuum Cut Valve Bypass Circuit Malfunction
The ECU detects a malfunction in the vacuum cut valve bypass electrical circuit.
Common symptoms
- Check engine light on
Possible causes
- Damaged wiring
- faulty bypass solenoid
Initial recommendation
Inspect vacuum cut valve bypass circuit wiring and solenoid operation.
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 Infiniti code P1490 with your vehicle's actual symptoms for more complete diagnostic guidance.
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