my 2005 acura tl AT has been slipping so i decided to drive my other car. The other day i took my acura out for a drive and my check engine light came on. Took it to a shop and this code pops up "p0174b bank 2 system too lean". Can that be the reason my car has been slipping? please help me Scott and timtim.

 

Probably not.

Likely just needs an O2 sensor replaced on bank 2. The tranny is a seperate issue.

 

so if that's the case, i have a o2 sensor problem and a tranny problem?

 

Yup.

 

damnnn FML!

 

Try changing the trans fluid, and maybe the pressure sensors, see if that fixes the issue.

 

princelybug and timtim on the forum helped me did a 3x3 ATF drain/refill. i ordered 3rd and 4th gear pressure switches http://www.acura-cl.com/forums/showthread.php?t=729149, going to try to see if that works and im also goin to change the o2 sensor. we'll see what happens. thanks bradE for the replies.

 

it needs a pcm update and a valve adjustment

 

what is that exactly? is it expensive?

 

PCM=Powertrain Control Module

 

It just means it needs a software update.

 

It just means it needs a software update.