Hey guys fairly new here. Anyways i have a 2004 tl 6speed manual transmission and the air intake was broken from previous owner installing a clutch so i decided to install a short ram intake(not sure that this has anything to do with the problem but o2 codes only came after i changed it) and i was getting o2 sensor codes which of course cause codes for misfires in all 6 cylinders. I changed all 4 o2 sensors and am still getting p2243 oxygen sensor reference voltage circuit/ open bank code. I cleaned all the connections and put brand new o2 sensors so im not sure what else could be the problem other than maybe a short in the harness but the harness seems to be intact. Anyone have any similar problems or know whats going on???

 

did you put OEM sensors?

 

​​​​​​​yes all 4 oem sensors

 

Know OEM sensors have different length wires, but if you can, switch the 2 upstream sensors and see if the code moves.

 

i tried switching them

 

 

sadly yes i get the same code but i did notice that i occasionally get a p0134 sensor 1 no activity. But like i said that code is only occasionally, it goes and comes

 

If you cleared the codes and they returned, you'll need to check the wiring for continuity.

 

alright is there any instructional, videos, or write ups on how to do so. And also what am i really looking for?

 

Get a multimeter, it'll help you tremendously

https://www.google.com/search?q=how+...hrome&ie=UTF-8

 

I'd first check the wiring harness plug very closely to see if any deformities.
At times it's quite a task. Need a wiring schematic to see the colored wires going to the ecu pins and check to see
if any are broken, no reading.

 

​​​​​​​i have a multimeter just wasn't sure what id be looking for and which pin id be checking

 

​​​​​​​i have checked the plugs and also cleaned them but ill have to check throughout tge rest of tge harness and on the other end for any damage, thanks ill let you know

 

​​​​​​​ok so i haven't found any exposed or damaged wires. The codes now alternate between the two(p2243 and p0134) and sometimes both together. I noticed sometimes when i accelerate quickly in first gear and get to around 6k rpms before shifting the check engine light will go away for a while or even sometimes until i start the car again