Nissan P1490: EVAP Vacuum Cut Valve Bypass Valve Circuit Malfunction

Is your scanner showing Nissan P1490?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Nissan P1490: EVAP Vacuum Cut Valve Bypass Valve Circuit Malfunction

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$400
Can I Still Drive?
:
Yes (Short-term only)

What Does The Nissan P1490 Code Mean?

Key on or Engine running, and the PCM detected an unexpected voltage condition on the EVAP Vacuum Cut Valve Bypass Valve circuit during the CCM test.

What Are The Potential Causes Of The Nissan P1490 Code?

  • EVAP vacuum cut valve bypass valve control circuit is open
  • EVAP vacuum cut valve bypass valve control circuit is shorted
  • EVAP vacuum cut valve bypass valve is damaged or has failed
  • PCM is damaged

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Nissan Engine Control Module
>>> 2002-2006 Nissan Altima Vacuum Cut Valve Assembly OEM NEW Genuine

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

ENGINE CONTROL SYSTEM SERVICE MANUAL for P1490 – Pages 576-581.

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