# The knock sensor on my Subaru legacy is bad. I want to place it myself. Easy fix?

**URL:** <https://community.cartalk.com/t/the-knock-sensor-on-my-subaru-legacy-is-bad-i-want-to-place-it-myself-easy-fix/80148>\
**Category:** Maintenance/Repairs\
**Created:** [July 3, 2013, 5:37am UTC](https://community.cartalk.com/t/the-knock-sensor-on-my-subaru-legacy-is-bad-i-want-to-place-it-myself-easy-fix/80148 "2013-07-03T05:37:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Drew6162](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@Drew6162](https://community.cartalk.com/u/Drew6162)\
**Post date:** [July 3, 2013, 5:37am UTC](https://community.cartalk.com/t/the-knock-sensor-on-my-subaru-legacy-is-bad-i-want-to-place-it-myself-easy-fix/80148/1 "2013-07-03T05:37:01Z")

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I drive a 1996 subaru legacy. 127k the current miles. My check engine light came on two weeks ago. My headlight, drivers side went out too. I took it to the dealer to have it fix. $95 for diagnostics and when it was all said and done I got a bill for $1600. Which included a new catalytic converter $900.00. I paid the price as I got this car for free. “Cheaper than a car payment.” On the way out of the dealer ship the check engine light comes on. I drove back to the dealer ship. Dropped off my car for the weekend. Now on Monday the knock sensor is bad. I want to replace it myself. Seems like a quick easy fix? But which knock sensor should I buy? The price range is $16 to $132. Why such a range? Is one really that better than the other? Costs $230.00 at dealer to replace a knock sensor! Am I getting knocked around? Thanks for accepting my question.  
Andrew