just came up, anyone know what it is?

 

P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

http://www.obdii.com/codes.html

 

is that a big deal?

 

Well it's a slow responding censor so I don't think your car will explode any time soon but it would be helpfull if we know what censor 1 bank 1 was used to monitor guess the best bet is call the dealer and ask.

 

02 Sensors help control the fuel distribution. This is an emissions related part. Go to dealer. Sould be under emissions warranty.

 

This code means that the upstream oxygen sensor on the passenger side is responding too slowly when driven rich/lean. A lean condition is the most likely source. You will not be able to accurately diagnose it. Odds are, the tech won't be able to either. This is an odd code and has a million possible causes. He will probably call me, I will keep my eye open!

Bank one = passenger side
Bank two = driver side
sensor one = upstream
sensor two = downstream

Just FYI

 

is upstream the one closest to the engine?

 

yes...I think its because of the LT....is the sensor moved down the pipes from where is was on the stock pipes?

 

any idea why i just replaced the sensor for this code (po133) with a new sensor and the code is still running?
Thnaks

 

Read above^^ this has happened to a few people since the new plug location is farther down the pipes...it thinks its slower to react.