# Wont pass smog

**URL:** <https://community.cartalk.com/t/wont-pass-smog/158827>\
**Category:** Maintenance/Repairs\
**Created:** [February 19, 2020, 4:50am UTC](https://community.cartalk.com/t/wont-pass-smog/158827 "2020-02-19T04:50:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Jason\_Scheel](https://avatars.discourse-cdn.com/v4/letter/j/b2d939/32.png) [@Jason\_Scheel](https://community.cartalk.com/u/Jason_Scheel)\
**Post date:** [February 19, 2020, 4:50am UTC](https://community.cartalk.com/t/wont-pass-smog/158827/1 "2020-02-19T04:50:15Z")

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So i have done everything to get my 2002 subaru outback to pass smog. New Catalytic converters, new o2 sensor, new ECU cars got a tune up. And its still says when i take it in the cat. not ready the monitors arent working.

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [February 19, 2020, 4:54am UTC](https://community.cartalk.com/t/wont-pass-smog/158827/2 "2020-02-19T04:54:26Z")

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Replacing parts won’t reset the readiness monitors. The monitors have to reset any time you clear the codes or disconnect the battery and some of them require a specific drive cycle to reset them.

Google drive cycle for your car.