2012 ram 1500 engine code p1129-closed loop fueling not achieved
have a '12 1500 outdoorsman with the 5.7hemi and I changed out the MAP sensor, Intake air temp sensor, O2 sensors (all OEM parts replacement from this online dude at sales@factorychryslerparts.com). I was about to do the PCV valve but want some clear feedback first as mine aint slugged and aint sticking but could be broke just staying open I don't know. I also do not know what else to do and I'm actually in the military in Italy. Really no available service place to go. So everything I do is via internet ordering (parts), or maintenance on my own. Really would appreciate any guidance as I still get engine codes P1129 (first) then P0135 and P0155 which all tell me closed loop fueling not achieved (probably Air/Fuel mixture to lean but I don't know) and the O2 sensors heating circuitry is off due to the closed loop not achieved hence the other two codes. I read in some forums elsewhere about maybe the Engine Coolant Temp sensor and I haven't had any problems as my truck will get to a temp around 197 and for the coolant and stays about that. thank you for whatever you offer.




