2003 Hyundai Elantra GLS. Replaced 02 sensor, light was off for approx. 5 days, then returned. Code PO133.
The also is an evap sensor.That can cause a Check Engine light.Over filling your tank will cause the media in your evap canister to swell.Sometimes causing the charcoal to clog evap line.To replace the canister is fairly easy.The part can be pricey.
Did you use a aftermarket O2 sensor or a genuine Hyundai one? If it's an aftermarket one it may be bad or not as good as the OEM one. See here for more details and other potential causes: P0133
2,296 views
Usually answered in minutes!
×