So I recently did an head swap
98 civic cx

99-00 ex head
99-00 ex intake manifold
D16y17 block
P29 75mm piston
High flow oil pump
98 cx original engine harness
Vtec, knock sensor & IACV wired correctly
ECM - 37820-P2P-A12 M/T (99-00 w/air injection)
1320 RMF header (no cat)
Passwordjdm power chamber intake

During installation of vacuum hose I accidentally broke one of the pipe on the FUEL INJECTION AIR CONTROL VALVE which connects to the intake pipe to the intake manifold. So I temporarily plugged the hose with a 12mm bolt. And so I started the vehicle.

The car runs and seems to idle fine

But after awhile(5mins) DTC sets and I get a P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

I have checked if the wires are plugged in correctly and checked for continuity on the harness pins to the ecu connector pins and I do. I can’t remember the voltage I was getting while it was idling. Prior to this swap I replaced that sensor and just reused it.

Now I’m thinking could the air control valve that I broke cause this DTC to set or the my actual o2 b1s1 is way too close to the exhaust port as in, I need to move it further down the exhaust manifold? Current location right now is about 12” from the exhaust port of the head, unlike the oem which is down below the motor. And if I was to use a o2 defouler, could that help?