In the evap system there are many different parts so in order to try and at least give you an idea, I will need the codes that Autozone pulled. Hyundai's seem to have a number of problems with thier evap systems even to the point of a no start condition after filling the vehicle up with gas. If you have the codes the pulled you can reply/comment back here or feel free to email me directly at [email protected] with all your information. I'll be happy to try and help you diagnose the problem. The most common codes are P0442 or P0456. If you have either one of these codes take a look at your fuel cap to make sure it has a good seal when closed (check the o-ring and such on the cap). Be happy to help just need a little more information (the codes) to help narrow down the problem.
SOURCE: service engine soon light is
How's that gas cap doing? It's part of the canister circuit and Will cause this code if the seal is leaking...accordianman
SOURCE: Engine light on-trouble code P0452
EVAP fuel tank pressure sensor low output. It sounds like the charcoal -filled canister, it's near the gas tank in a cylinder shape.The canister may have cracks or a hose is leaking around the area and it will give a fault code of PO452. Are you smelling any odors or emission smell from the car?
SOURCE: The "engine power is reduced" light comes on
po455 is Probable Cause[s]
1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.
SOURCE: '07 Hyundai Elantra Oil Filter Location
Front of the engine, passengers side. If you have to ask, maybe you shouldnt be trying to do your own oil change.
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