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P0343 issue after swap

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Old Jun 3, 2018 | 07:30 PM
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Default P0343 issue after swap

Having some troubles with my engine swap and thinking it may have something to do with the LS1 extension harness i am using. iI’m getting the error code P0343 which is the cam position sensor. My engine harness is a PSI harness for an LS1 and my engine swap is an LS2 which I purchased a harness that moves the rear cam sensor of an LS1 to the front for an LS2. I have read some other post about wires being swapped but can’t find any details on what wires.

Car starts most of the time but occasionally sputter and pops at startup, error code P0343 won’t clear and my RPM output to the gauge is barley registering.

CAM and cam bolts are good and torqued so almost certain this is not the problem.

any help would be appreciated.
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Old Jun 3, 2018 | 09:27 PM
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If I'm not mistaken, the outer two wires on the cam sensor plug are swapped to make it work with the Gen III harness.
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Old Jun 3, 2018 | 09:49 PM
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Thanks, after another hour of searching the forums and other LS2 sites I think your right and found this diagram. I will give it a try tomorrow.


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Old Jun 3, 2018 | 09:59 PM
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Yep, that should do it, unless there are any other issues.
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