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1519 Views 2 Replies 3 Participants Last post by  Robby
Ok guys so I installed a new oil catch can last week with a small hose smaller than stock and it was ok but I wanted to go big and go with the same size pcv pipe as the Cruze has stock but I did that today and it tripped the p0171 light on me any ideas?

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What year, mileage, and engine does your Cruze have? Pretty sure that code is usually thrown when the PCV valve stops working properly.
Go back to stock, clear the code, see what happens.

Either your mod has disrupted crankcase vacuum, in which case the code won't reset (once stock) or, if the code resets, you can look into other components that can set the code (such as the cam cover or intake manifold).

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