Amir904

my check engine light came on last night, but when i got on the highway, after about 10 miles it went away. i just recently did the timing belt, and spark plugs and then the seafoam cleaning. will the error code be still stored if i go to autozone to get it checked out?

joegee1773

Yes, the error code will still be stored in the memory of the truck.

nunsa

It's probably going to be 1 of your O2 sensors, seafoams been known to do that! Pull your efi fuse and take her for a drive it shouldn't come back on!

Amir904

P0133 code checked at autozone, yes its my O2 sensor... i wonder if others who used seafoam got this problem?

keisur

yes, check out that thread. that's once reason I've only done the 1/3 can in the PCV and full can in the gas tank. it seems the people who've actually put it in the crankcase have experienced this.

MTL_4runner

You can try to clean the O2 sensor with some "sensor safe" carb cleaner, but most of the time you will need to replace it unfortunately.

BOSTON4RUNNER

likely will have to be replaced

I for one would only use a Toyota replacement, had bad luck with aftermarket ones

actually does anyone know of a direct plug in aftermarket replacement

I did my front one two months back due to a PO135 code.......now the next one back...after the cat popped a PO136

would be great to save a few bucks, and get a direct plug in one that is as good as the one I would get from the dealer

thanks