# check engine light

**URL:** <https://forums.speedlife.net/t/check-engine-light/141720>\
**Category:** Canada Nissan Automotive\
**Created:** [March 5, 2006, 8:51pm UTC](https://forums.speedlife.net/t/check-engine-light/141720 "2006-03-05T20:51:19Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![altimaman](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@altimaman](https://forums.speedlife.net/u/altimaman)\
**Post date:** [March 5, 2006, 8:51pm UTC](https://forums.speedlife.net/t/check-engine-light/141720/1 "2006-03-05T20:51:19Z")

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what is a Knock Sensor, Bank 1 , what does this mean?

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**Author:** ![RS13](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@RS13](https://forums.speedlife.net/u/RS13)\
**Post date:** [March 5, 2006, 9:58pm UTC](https://forums.speedlife.net/t/check-engine-light/141720/2 "2006-03-05T21:58:54Z")

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your knock sensor is malfunctioning. Check your wires or change it.

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**Author:** ![chasenyadown](https://avatars.discourse-cdn.com/v4/letter/c/e79b87/32.png) [@chasenyadown](https://forums.speedlife.net/u/chasenyadown)\
**Post date:** [March 5, 2006, 10:29pm UTC](https://forums.speedlife.net/t/check-engine-light/141720/3 "2006-03-05T22:29:15Z")

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Yeah check the wiring on the knock sensor, your knock sensor is basically a microphone that listens for detonation in your engine, lots of the time (like in a Spec V) after doing mods to the car ie Cams, Header the Knock Sensor will confuse normal engine noise as detonation and retard timing to save the engine from detonation. So basically a Knock Sensor retards timing when needed. Hope that helps answer your question a lil.

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**Author:** ![altimaman](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@altimaman](https://forums.speedlife.net/u/altimaman)\
**Post date:** [March 6, 2006, 11:06am UTC](https://forums.speedlife.net/t/check-engine-light/141720/4 "2006-03-06T11:06:13Z")

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thanks for the info, but will this mess up my engine? and would that make my engien light come on? the only thing i have done is a adapter and filter, and axle back exhaust

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**Author:** ![PyreXXX](https://avatars.discourse-cdn.com/v4/letter/p/bbe5ce/32.png) [@PyreXXX](https://forums.speedlife.net/u/PyreXXX)\
**Post date:** [March 6, 2006, 1:41pm UTC](https://forums.speedlife.net/t/check-engine-light/141720/5 "2006-03-06T13:41:47Z")

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It won’t mess up your engine as long as you aren’t going WOT. Until you get it fixed, I’d recommend moving up a grade of gas to 89 to prevent detonation.

The knock sensor, like Nick said, retards timing based on knocks/pings, also known as detonation. As long as you don’t put heavy loads on the motor or use crappy gas until you get it fixed, you’ll be OK.

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**Author:** ![altimaman](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@altimaman](https://forums.speedlife.net/u/altimaman)\
**Post date:** [March 6, 2006, 9:42pm UTC](https://forums.speedlife.net/t/check-engine-light/141720/6 "2006-03-06T21:42:36Z")

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thanks alot guys, i can always trust this site and people for good advise