Hi Guys
So my 2011 truck started throwing the check engine light it comes and goes its the p2096 code says code P2096 post catalyst fuel trim system too lean (b1). Anyone had this before on there 6.2s where should i start looking?
Thanks

 

oxygen sensor or exhaust leaks.

 

Yeah I see two sensors before the two catalytic converters where do I find the post sensors?

 

Pre = before cat. Post = after the cat. B1 means Bank 1, which is whatever bank cylinder #1 is on. Sorry I don't remember which side bank 1 is on.

 

My truck gave a P2096 this past weekend. Cleared it and drove around for a while. Today it threw the same code. No other codes present, just P2096.

I did look under the truck and it seems pretty easy to get to the two sensors. Is it worth swapping them to see if the code changes to the other side?

Truck idles and accelerates just fine. Fuel mileage seems to be down a bit, but the air filter is very dirty and I will be replacing that this week.

Other suggestions? I have also seen you can check the sensor by hearing it and mearusre the voltage. Seems easy enough to do, but do you create other problems from that?

Thank you