I'm just looking to get a smog check. I recently had my vehicle as planned non operational due to a check engine light. Recently I've been fixing the truck and have replaced the catalytic converters and the 02 sensors. I have also replaced the EGR valve, the MAP sensor, the IAT, and all spark plugs as well as the boots. Yes, I also replaced the ECM. Still catching the same 1128/1129 closed loop fueling not achieved bank 1 and bank 2 o2 sensors. Honestly the truck is running great with 302k/mi. It has the 4.7l JASPER swap per the dealer on a warranty. I open for suggestions, or even wiring diagrams because I'm about all out of ideas. I hooked up multiple scanners just to collect the data. I'm willing to share the specs. Thanks, God Bless!

 

What sensors did you use? Hopefully not Bosch.

 

Potentially, whats recommended? Ive swapped the out a few time with different ones. Auto zone, O'Reilly recommended. I oopen for options, have you had the same issue?

 

NTK or Denso sensors only please.

 

Ok I'll pick up new ones. Hopefully that works out. I appreciate the insight. I'll let you know what happens next.

 

I swapped out bank1 and bank 2 upstream sensors with Denso. I'm getting the same code.

 

The PCM needs a few things to go into close loop, all of its sensor must be operating properly, engine needs to come up to temp, etc. Do you have a scanner that can read live data?

 

yes I have a live data read scanner. I took all the pictures I thought I would need too. Ran the truck for 10min and got pictures

 

 

Something is up on bank 1. The graph for O2 sensor voltage is not what I would expect. (sensor 1) Should look more like bank 2 sensor 1.

Any misfires showing up? Bank 1 is running REALLY lean.