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08-18-2025, 02:28 PM
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#1 |
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Registered User
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 221
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P0342 code
I have an 2001 LQ4 swapped into my 66. The ECU and harness is from a 2005 Silverado. I have a P0342 code - Camshaft Position Sensor A Circuit Low.It is causing a hard start situation, once it fires it runs great. I replaced the sensor thinking it would be an easy fix, but the code remains. I checked continuity on the wires from the plug to the ecu, everything checked out. What else would cause this code to continue? The motor has an aftermarket Comp Cam in it. Only thing I can think of is a bad ECU possibly?
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08-18-2025, 07:30 PM
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#2 |
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Moderator
 
Join Date: Jun 2017
Location: Greensburg. PA
Posts: 2,324
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Re: P0342 code
Most likely the PCM or wiring is not providing correct voltage or ground to the sensor.
Follow this link for a simple diagnosis process https://easyautodiagnostics.com/gm/4...ode-definition There are other links on the page to show you how to bench test the sensor/ Only tool you will need is a common multimeter... Bill 
__________________
Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2025 Chevy Equinox 
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08-18-2025, 08:07 PM
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#3 |
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Moderator
Join Date: Jun 2017
Location: Greensburg. PA
Posts: 2,324
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Re: P0342 code
You may find the following helpful with sensors etc...
https://www.lsenginediy.com/sensors-inputs-guide/
__________________
Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2025 Chevy Equinox
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08-29-2025, 11:29 AM
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#4 |
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Registered User
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 221
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Re: P0342 code
Thanks Aussie, great info there!
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