Recent content by super24w

There are 4 02 sensors that I can think of on the 4runner 2 before the cat and 2 after cat. The P0156 code is for the drivers side after the cat.

Do you know how to check and see if a sensor is bad? Both sensors were brand new from Toyota. I followed the wire up as far as I could.This vehicle has never been in an accident.It has 133,000 on it. Thanks for the reply.

I have a 05 4Runner, check engine light came on. Scanned it and po156 code came up. I put in a brand new from Toyota oxygen sensor(drivers side post cat.) Reset the check engine light and everything was fine for about 1200 miles.Light came on again po156. I changed the same 02 sensor and put in...