# P1135 code **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** avalon, toyota\ **Created:** [February 17, 2010, 3:03pm UTC](https://community.cartalk.com/t/p1135-code/44641 "2010-02-17T15:03:36Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![chrisworrell](https://avatars.discourse-cdn.com/v4/letter/c/b4bc9f/32.png) [@chrisworrell](https://community.cartalk.com/u/chrisworrell)\ **Post date:** [February 17, 2010, 3:03pm UTC](https://community.cartalk.com/t/p1135-code/44641/1 "2010-02-17T15:03:36Z")
how do i fix this and how do i reset ---
**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\ **Post date:** [February 17, 2010, 3:27pm UTC](https://community.cartalk.com/t/p1135-code/44641/2 "2010-02-17T15:27:13Z")
First, what IS P1135 code? It’s a DTC trouble code for: The front A/F oxygen sensor heater circuit has a malfunction (bank 1) on your Toyota Avalon 3.0L V6. This could be from a broken wire, poor connection, or a bad A/F oxygen sensor (also, called, “Wide Band oxygen sensor”). The sensor is too expensive to just replace it to see if that will take care of the malfunction. The A/F heater circuit needs to be checked with a multimeter. You could remove the EFI fuse, wait 2 minuets, and reinstall the EFI fuse, to erase the trouble code. If the cause is still there, the check engine light will come ON the next time the engine is started. ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [February 17, 2010, 4:13pm UTC](https://community.cartalk.com/t/p1135-code/44641/3 "2010-02-17T16:13:11Z")
Year? Mileage??