o2 sensor issues...... please help :/

['93CB7Ex]

im at my wits end with this.

i had a obd1 f22b1 swap in my 93 ex coupe. swapped the wires a6 and a11 i believe to the P0A ecu. ran fine, whatever. bought another swap (jdm f22b dohc) and stuck it in no problems.

now heres my problem. i switched back the 2 wires a6 and a11. as soon as you KOEO, instant solid cel. code 1 and 41. ive changed complete engine harness 3 o2 sensors and another ecu. is there some kind of fuse or possible burnt wire when swapping a6 and a11? car runs smooth as fuck, drives good, but wont pass emissions due to inop o2. ive checked every wire in the o2 circuit. im getting 8v on orange/black. only thing i havent done is overlay the circuit. i had this same exact engine in my car a couple years ago and it never gave me issues before. ive only had this problem since i swapped a6 and a11 to run a p0a.

[Accord problems]

how old is the 02 ?

['93CB7Ex]

not sure... it tests good though. just ordered a 02 harness off ebay. guess ill try that.

[Accord problems]

any up date's ?

['93CB7Ex]

put the new 02 harness in, same results. code 1 on koeo.

idk what to do.

also bought a new denso o2 sensor same result.

[Accord problems]

is this the same ecu that you used when this first started ? if so try a different one that's is the right one for you're engine . say you have a f22a1 or f22a4 use a pt3 . if it's a f22a or f22a6 use a pt6 . here check out this thread that might help you choose a ecu .
Will F22B dohc run right on a H23 Ecu ? - CB7Tuner...

['93CB7Ex]

tried a gang of ecu's, i got 2 pt6 po6 p28 p14 all do that same thing.

[Accord problems]

then i would say you have a short if you already replaced the 02 .

['93CB7Ex]

idk how though.

i just ran through all ecu grounds. all are good.

still have a instant check engine light on key on engine off. always reads code 1 no matter what ecu i use.

[djcaz_aom]

Since you swapped the pins, I would check to make sure they are in the connector all the way. A code 1 could be as simple as loose wiring somewhere.

['93CB7Ex]

ive checked that. and when i did swap them, i cut the wires and swapped them. never removed the pins.

[Accord problems]

but it could be just a broken wire or short in a spot some where else .