CAMARO6 - View Single Post - [SOLVED] O2 B1S1 has no millivolts (mv)

TheWildJarvi · 02-10-2024, 09:56 PM

I ended up buying a new o2 sensor which didn't fix it, but it did mean i had a spare.
So on the old o2 sensor, i t-tapped into it and ran those wires to a box with 4 banana jacks so i can connect a multi meter
I then installed that t-tapped sensor into the good working bank
read data out, then compared that to my faulty side.

Passenger side:
12v only on when car started not accessory
O2 output regardless

Driver side:
12v no power even when started
O2 output locked high

I used some very sharp skinny wire cutters to cut the ziptie harness holding the wires in a loop making inspecting the harness very hard
Doing this allowed enough length in the wire to connect the o2 sensor without a wiring harness extension
i pushed the wires into the connector firmly and then lowered the car and then it read voltage out. I then connected HP tuners to see the data log and check for O2 voltage.

Attached are misc images of my test box set up, just incase it helps others.

02-10-2024, 09:56 PM	#4
TheWildJarvi Drives: Camaro SS 6mt Join Date: Jul 2023 Location: NY Posts: 10	I ended up buying a new o2 sensor which didn't fix it, but it did mean i had a spare. So on the old o2 sensor, i t-tapped into it and ran those wires to a box with 4 banana jacks so i can connect a multi meter I then installed that t-tapped sensor into the good working bank read data out, then compared that to my faulty side. Passenger side: 12v only on when car started not accessory O2 output regardless Driver side: 12v no power even when started O2 output locked high I used some very sharp skinny wire cutters to cut the ziptie harness holding the wires in a loop making inspecting the harness very hard Doing this allowed enough length in the wire to connect the o2 sensor without a wiring harness extension i pushed the wires into the connector firmly and then lowered the car and then it read voltage out. I then connected HP tuners to see the data log and check for O2 voltage. Attached are misc images of my test box set up, just incase it helps others.