Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
So, I have a 2003 Hyundai Elantra GLS, 161k miles with error code p0451 and p0420. And p0303 1: I ’ve looked online but I can’t seem to find the fuel tank pressure sensor. I’ve checked on top of the fuel pump; not there. Do anyone know where I can find it? 2: this code popped up after replacing the purge calve. Since then Ive changed the EVAP canister valve and canister, and both o2 sensors. Both cats were replaced 1.5 years ago and all spark plugs and wire were replaced the same day as canister and Valve (2 days ago). I cleared all the codes and did the 2 drive cycles and boom…thyre all back. Any reason why misfire showed back up? Scan tool shows cats are good and only have red X for EVAP. I appreciate any and all help and suggestions. Thx
It's not the greatest picture, and there is no written description but, maybe, this will help.
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