# O2 Sensor **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** sensors, toyota\ **Created:** [February 27, 2010, 7:55pm UTC](https://community.cartalk.com/t/o2-sensor/45227 "2010-02-27T19:55:55Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![toribee](https://avatars.discourse-cdn.com/v4/letter/t/c37758/32.png) [@toribee](https://community.cartalk.com/u/toribee)\ **Post date:** [February 27, 2010, 7:55pm UTC](https://community.cartalk.com/t/o2-sensor/45227/1 "2010-02-27T19:55:55Z")
My check eng. light has been on for abt 3 months. My 2003 corolla LE has only 35K miles (I bought certified used w/12K on engine) - the dealer determined bad O2 sensor, but now want $230 just for the part and another $175 for labor. Is this reasonable for a car of this mileage? Should I take it somewhere else? There is definitely lower mpg and strong gas smell (but seems like the mpg has always been lower than the advertised # and the smell, although worse now, has always been there a little). Any thoughts? I called Toyota cust. svc. and of course, they take no responsibility for possible faulty unit. Do I have any resource, or do I just have a lemon and should I get rid of it before something else goes? ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [February 27, 2010, 8:25pm UTC](https://community.cartalk.com/t/o2-sensor/45227/2 "2010-02-27T20:25:12Z")
I would start by checking around locally to see what other local shops are charging for the work. You local prices are likely different than mine. So I can’t say what a good price would be in your area. Stay away from chain places. Local independent shops are usually the best bet. It would be a good idea to get the actual error code. It should be like “P1234” I would also consider figuring out what maintenance is now due or over due for your car.