Causes and Fixes P0327 Code: Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

How to fix an engine P0327 Code: Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
Possible Causes of a P0327 Code:
Bad Knock Sensor
Wiring, such as damaged or loose connections
Blown Fuse
Engine Timing is off
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[@ITALIAN744]

Thank you very helpful going to check it out make sure wirings good if not replace retest its pending not stored does it only if it sits long time possible injectors cylinder #3 missfire i already did the plugs not to long ago will inspect cylinder but that is dead on

[@RichChasteen]

Is it possible to have a real knock??

[@JPBeausoleil81]

Can a bad O2 sensor trigger an issue with the knock sensor?

[@HVAC_Mechanic]

If the 02 sensor is giving bad data and the computer is adjusting the air/fuel ratio too lean or rich, it may be triggering the knock sensor. If this happens, there should be other codes.

[@JPBeausoleil81]

@@HVAC_Mechanic ok, thank you. That's kind of what I thought. It's strange though, I can clearly see my one of my O2 sensors is reading 0.0volts...then I look at the fuel trim cylinder reading..that reads 0%. But the only code I'm getting is the knock sensor low voltage. Idk why it's not throwing a O2 sensor code.

[@autoperformance503]

I changed the sensor and harness and still giving me a code

[@russelldb1593]

What if i replaced knock sensor, all spark plugs, spark plug wire, all coils, crank position sensor, camshaft position sensor, map sensor, mass airflow sensor, new throttle body, intake manifold gasket, valve cover gaskets/both, valley pan gasket, and put in a new ground wire in the back, oil pressure sensor, all new O2 sensors, Purge valve by the gas tank. I replaced everything and still have the same issue.. what do i do next

[@russelldb1593]

Also replaced all evap tubes.

[@anthonyj.lobreto5544]

I hope someone answers I've done this twice, once with Dorman and my boss at work said everything needs to be GM parts so I ordered from Amazon and now got P0327 code. If I figure it out I'll let you know.

[@adanrodriguez176]

Why not try replacing knock sensor wireing harness

[@gabrieldavenport1395]

Check your wiring

[@Socal-1776]

@@anthonyj.lobreto5544just replaced both sensors and harness with oem pick em up from dealer myself and now the front knock sensor is throwing a code . Did you figure out the issue?

[@sarasavans3604]

Where is the fuse located on a 2oo5 gmc sierra