Code p0400
03-04-22, 01:18 PM
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Code p0400
My check engine light came on the other day. I use my code reader and p0400 pop up which is a evap leak. Has anyone had this problem and what are usual fixes for this code ?
03-04-22, 04:14 PM
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What is your year and model? P0400 is a generic EGR code which the GS300 and I'm pretty sure 400/430 don't have. Are you sure it wasn't P0440 or 442? Some numbers after the 04? Those would be EVAP. Either way, it's probably sensing a leak in the fuel tank/canister and lines system which you will likely need to pay a shop to diagnose. But check your gas cap for a good fit and no cracks or a flat rubber seal. Replace if the cap is bad and clear the code and see if it comes back.
03-04-22, 07:10 PM
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What is your year and model? P0400 is a generic EGR code which the GS300 and I'm pretty sure 400/430 don't have. Are you sure it wasn't P0440 or 442? Some numbers after the 04? Those would be EVAP. Either way, it's probably sensing a leak in the fuel tank/canister and lines system which you will likely need to pay a shop to diagnose. But check your gas cap for a good fit and no cracks or a flat rubber seal. Replace if the cap is bad and clear the code and see if it comes back.
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