# Reset Check Engine Lite?

**URL:** <https://community.cartalk.com/t/reset-check-engine-lite/5735>\
**Category:** Maintenance/Repairs\
**Tags:** jetta, engines, lights\
**Created:** [October 9, 2007, 9:34pm UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735 "2007-10-09T21:34:02Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![dwood520](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@dwood520](https://community.cartalk.com/u/dwood520)\
**Post date:** [October 9, 2007, 9:34pm UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735/1 "2007-10-09T21:34:02Z")

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My son has a 97 VW Jetta.  
  
  
  
 We recently replaced the O2 sensor, but the  
  
 check engine lite remains on.  
  
  
  
 Anyone know how to reset?  
  
  
  
 Thanks!

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**Author:** ![Beadsandbeads](https://avatars.discourse-cdn.com/v4/letter/b/c57346/32.png) [@Beadsandbeads](https://community.cartalk.com/u/Beadsandbeads)\
**Post date:** [October 10, 2007, 2:42am UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735/2 "2007-10-10T02:42:48Z")

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It might go away on its own in a while or you can unhook the battery for a half hour or so.

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [October 10, 2007, 3:16am UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735/3 "2007-10-10T03:16:44Z")

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What code does the check engine light indicate? It MIGHT not be for the O2 sensor. Auto Zone, or one of the other auto parts stores will read it for you.

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**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\
**Post date:** [October 10, 2007, 4:00am UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735/4 "2007-10-10T04:00:54Z")

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It only takes a minute or two…If you have an anti-theft radio, make sure you know the reset code before you disconnect the battery…

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**Author:** ![ChevyC60](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/chevyc60/32/310_2.png) [@ChevyC60](https://community.cartalk.com/u/ChevyC60)\
**Post date:** [October 10, 2007, 5:22pm UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735/5 "2007-10-10T17:22:47Z")

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Upon professional advisement, it has taken as long as overnight to reset my own cars computer/diag.lights.

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**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\
**Post date:** [October 10, 2007, 5:26pm UTC](https://community.cartalk.com/t/reset-check-engine-lite/5735/6 "2007-10-10T17:26:33Z")

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Autozone, Advance Auto, O’Rielly’s any of them can scan for any new codes, and clear all the trouble codes with a hand-held scan tool for free. The best, quickest way to get it done.