I have a 2008 Hyundai Santa Fe 3.3L with 107,000 miles. My check engine light is on and the mechanic says its an o2 sensor code. He replaced the purge valve, o2 sensor and the gas cap but after 30 miles the light has come back on twice. He starting to think its a computer issue because he cant find anything wrong. Hes going to replace the parts again under warranty just to see if I had a bad part. Any thoughts?
Clarification: What code(s) show up when you plug an OBDII-scanner?
unfortunately I dont know the exact codes. Originally when i brought it in it was the evap system and the o2 sensor. Evap is gone but o2 sensor code still comes up. Thanks for your reply! but i dont know the exact codes:(
Start with better mechanic he's just guessing oxygen sensor codes are generic codes he needs a digital storage oscilloscope and knowledge of reading waveforms to test the whole system he's just guessing he doesn't know what he's doing find a mechanical really understands how to fix those things
