Car has check engine light on

>Car has check engine light on
>take it to autozone to get it scanned
>guy says its an upstream o2 sensor code, but before purchasing it i should take the car to a mechanic so they can tell me if its actually the sensor thats fucked or maybe something else
>take it to mechanic
>he keeps it 3 days and charges me 50$ for diagnosis, 50$ for work, and $100 for the o sensor
>drive car around for 2 days
>CEL comes on again
>take it to autozone to get it scanned
>o2 sensor code

FUck, why are mechanics such pieces of shit and scammers?

>paying a mechanic to change an O2 sensor
Jesus OP, I barely work on my car but even this is something I'd do myself

KEK idort

My mechanics check shit like this for FREE and then reset my ecu and i dont have to pay shit :3

I wasnt paying him to change the sensor, i was paying him so that he could check if it was actually the sensor or if it was something else

Which he couldnt do right

You live and you learn. Better luck next time OP. Every time I drive past my old scumbag mechanics shop i think about pulling out my CCW and doing a drive by.

Pic related, my captcha

MOAR

take it back you shithead and tell him it happened again so he can fix it right before you call him a scammer

hes not gona give me back my money for the sensor though

O2 sensor codes are almost always fuel trim issues, O2 sensors very rarely have issues. You probably have a vacuum leak, MAF sensor or a fuel pump issue, but the only way to find out is if some dude actually fucking knows what they're doing.

>car has problem
>bring car to dealership I used to work for
>mechanic friends tell me problems
>get car fixed for dirt cheap
You just need connections.