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P1490

Vacuum Cut Valve Bypass Valve Circuit

2011-2013 Infiniti M56 5.6L V8

Low SeverityPowertrain

Description

Electrical fault in vacuum cut valve bypass valve circuit.

Symptoms

  • CEL
  • EVAP issues
  • Failed emissions

Common Causes

  • Open/short in wiring
  • Faulty solenoid
  • Corroded connector
  • Faulty ECM

Diagnostic Steps

  1. Test circuit resistance
  2. Inspect wiring
  3. Check connector
  4. Test ECM output

Repair Notes

Repair wiring or replace valve.

Other Powertrain Codes

P1490 on Other Vehicles

Common Questions

What does code P1490 mean on a 2011-2013 Infiniti M56?

P1490 stands for "Vacuum Cut Valve Bypass Valve Circuit". Electrical fault in vacuum cut valve bypass valve circuit.

What are the symptoms of P1490 on a Infiniti M56?

Common symptoms of P1490 include: CEL, EVAP issues, Failed emissions.

What causes P1490 on a 2011-2013 Infiniti M56?

Common causes of P1490 include: Open/short in wiring, Faulty solenoid, Corroded connector, Faulty ECM.

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