What is the drive cycle for emissions testing?

Tiny
ANONYMOUS
  • MEMBER
  • 2002 CHEVROLET MONTE CARLO
  • 173,847 MILES
Emissions test won't read it and check engine light is not on.
Monday, December 31st, 2012 AT 8:33 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More than likely, you are failing for one of two reasons. Either the monitor is failing, or you have a P1000 code which indicates the same thing.

However, the P1000 failure doesn't tell us which monitor needs to run so we will need to do all the drive cycles.

https://www.2carpros.com/articles/scan-test-is-incomplete-p1000

Clearly these will run under normal driving but that will take up to a couple weeks or more depending on your driving.

Please see the attached info for more detail and let me know if you have other questions. Thanks
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Wednesday, February 9th, 2022 AT 3:44 PM

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