The engine light may still be on because the stupid garage did not erase the codes. Ask them if they did.

 

They installed Walker sensors not bosch - could this be an issue? still trying to get all the codes from the shop we took the truck to. they are looking for the paperwork to call me back

 

I believe it came with Bosch so they should have put Bosch back in and you should have been asked what you want put in. From what I read about the Walker o2's they are not all that great and only a few dollars cheaper. For what you paid they should have platinum tips. Did they erase the codes for the o2's? I hope you charged this because at least you have 90 days to dispute it. I have disputed things garages have done wrong to my cars in the past and have won every time. Im sorry what you paid and its still not fixed, thats grounds for a CC dispute. You took it to be repaired they put after market parts in and after you paid gave the truck back to you in the same condition you brought it in. Thats a CC dispute. Get your money back and do it yourself.
Just my 2 cents.

 

Its not the O2's, its the tune up.
Walker is not the best brand but they will work fine, you need a tune up, nothing will be fixed until that is done.

 

Okay - had the car checked again and here is the latest. the following codes came up:
PO174/P0175 Mixture adaptation factor FRA bank 2
PO155 Oxygen sensor heater upstream cat bank 2 (yes one I replaced and am fighting the charge for)
PO130/Po132/PO134 Lambda sensor upstream catalyst bank 1-signal iplausible /out of range
PO135 Oxygen sensor heater upstream cat bank 1

I am bringing it in for the tune up as suggested but please let me know if you think this will get my truck to pass inspection with these other codes. the last guy did not mention a tune up but a replacement of the converter

 

I wonder if your MAF is soiled?

Frank, what kind of air filter do you have?

 

Up stream codes have ZERO to to do with the cats, I think you need a different shop.

 

I agree with spike!