OBD Error Code P0133

[dennis_svensson]

hi just got an warning light on just when i got home.
did a test with elm 137 and found one error.
OBD Error Code P0133, o2 sensor Circuit Slow Response.
any ideas what i shuld do now? i got it tuned this summer and mods are
UICP hardpipe.
Evo x FMIC.
KN dropin filter

http://engine-codes.com/p0133_mitsubishi.html

[Jackal]

Well its real cold out now, chances are the back O2 sensor never got up to temperature.
Was it a short drive? AKA Less than 30 minutes

[dennis_svensson]

wasent so cold today :( around +2c, i have driven in colder and same route.
but i was driving verry slow and the car was almost up to temp. (10 min drive)
i cleared the error and started the car for 5 mins. gonna se tomorrow morning if it pops up :)

[crak]

If it keeps bugging you. You can disable it here in ECU Flash. Some people say it breaks the sensor because its disabled. I have turned it off and on without problems. Then again that rear sensor is just for emissions anyways and has nothing to do with you AFR ratios.

http://i46.tinypic.com/2hreste.png

[tencents]

you don't have a testpipe or hfc do you?

[RALM]

hi just got an warning light on just when i got home.
did a test with elm 137 and found one error.
OBD Error Code P0133, o2 sensor Circuit Slow Response.
any ideas what i shuld do now? i got it tuned this summer and mods are
UICP hardpipe.
Evo x FMIC.
KN dropin filter

http://engine-codes.com/p0133_mitsubishi.html

Hey man I had the same probably when it started getting cold. I have the stock Cat I just got both ends cut to 3inches just so the cat would not bottle neck the flow from the custom exhaust and to give it a stock lock in case the cops try to give me some problems. This code would come one once a week starting in October past. I tried clearing it tones of times. I had to get a knew one. I had the Local Good Yeah shop replace it and used my extended warranty because the dealer may have tried to void it due to the exhaust. The job was a little over 400 bucks but my deductible is like 100 so it worked out well prayfully this helps. And that code should be for O2 sensor bank one I remember that thing very well.

[dennis_svensson]

ok cool :). i was thinking it was the air flow sensor or something expensive :). iv bin driving alot now and no problems, mabey i just needed to give it some more gas to cleen out the exhaust hehe :).
gonna drive on 98octan now for some, instead of 95+ a booster