# Nissan Frontier Knock Sensor P0327 (supercharged)

**URL:** <https://community.cartalk.com/t/nissan-frontier-knock-sensor-p0327-supercharged/180093>\
**Category:** Maintenance/Repairs\
**Tags:** nissan, frontier\
**Created:** [October 20, 2021, 8:27am UTC](https://community.cartalk.com/t/nissan-frontier-knock-sensor-p0327-supercharged/180093 "2021-10-20T08:27:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![joiklaa\_177213](https://avatars.discourse-cdn.com/v4/letter/j/6de8d8/32.png) [@joiklaa\_177213](https://community.cartalk.com/u/joiklaa_177213)\
**Post date:** [October 20, 2021, 8:27am UTC](https://community.cartalk.com/t/nissan-frontier-knock-sensor-p0327-supercharged/180093/1 "2021-10-20T08:27:05Z")

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Hey guys I have a 2002 Nissan Frontier supercharged and it’s throwing a P0327 code for a bad knock sensor. I cleared the code with an OBDII scan tool just fine with the ignition on but when I start the truck the code comes back. I was just wondering if this guarantees a bad knock sensor as I was told that it could be something other than the KS that’s bad.

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**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\
**Post date:** [October 20, 2021, 9:33am UTC](https://community.cartalk.com/t/nissan-frontier-knock-sensor-p0327-supercharged/180093/2 "2021-10-20T09:33:49Z")

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P0327 Knock Sensor 1 Circuit Low Input

From all the other codes a knock sensor can pull, yours is a “Circuit Low Input”

Circuit low or high usually means wiring, so check the wires and connectors to the sensor.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [October 20, 2021, 2:38pm UTC](https://community.cartalk.com/t/nissan-frontier-knock-sensor-p0327-supercharged/180093/3 "2021-10-20T14:38:02Z")

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The knock sensor is located under the intake manifold.

![image](https://global.discourse-cdn.com/cartalk/original/3X/3/d/3d664ad5ddc5dda144d0ddb1d16cdcb54dcefc2f.jpeg)

To test it, make a mark on the crank pulley,

Start the engine, and with a timing light pointed at pulley, take a tool and bang on the intake manifold near the sensor.

If the mark made on the pulley slightly moves each time the manifold is struck, the sensor is fine.

Tester