Location of Bank 2 on Audi a6 to replace o2 sensor

2.8L USA car? not told country
look here yet?
https://eautorepair.net/Marketing/Default.asp

engine pressure not transmission;.
the cluster lamp lies to you. that? some cars have 2, on for lamp and other for VVT !
it is switch and most cars it turns on below 7psi.
lamp K3 and switch F1 is its name. (German spec names)
older engine its on top front (facing engine) cam shaft cover)
some Audi dealers show the parts list with all parts show graphically
best is try there first, then buy the service manual and find it.
name (yes OEM audi sites some do not show it)
Engine Oil Pressure Switch. OIL PRESSURE SENDING UNIT. OIL TEMPERATURE SENDING UNIT. Part Number: #06A919081J ask here on real forums Audi

some have 2, a switch and sensor oil pressure.
1 just behind the oil filter mount.
and one near cam (top right bank facing bank)

https://www.audiworld.com/forums/a6-s6-c5-platform-discussion-7/oil-temperature-sensor-location-99-2-8l-2763857/

post there, is best. pure AUDI there.

https://www.yourmechanic.com/article/p2629-obd-ii-trouble-code-o2-sensor-pumping-current-trim-circuit-open-bank-2-sensor-1-by-brady-klopfer

Referencing oxygen sensor or O2 sensor or 'lambda sensor':

B1S1 is 'bank 1', which is the passenger side cylinder bank on a V6 or V8.

S1 is the 'upper' or 'upstream' sensor, closest to the cylinder.

Bank and sensor location. Bank 1 refers to the back of cylinders that contain cylinder #1. Bank two refers to the other bank of cylinders that do not contain cylinder #1. Sensor 1 refers to the upstream O2 sensor or the O2 sensor before the catalytic convertor. Sensor 2 refers to the downstream O2 sensor or the sensor located after the Catalytic convertor. I hope that helps, let me know if you have any other questions, good luck.

What is the code you are getting? Have you checked the engines compression and all cylinders are in good shape? Do that test and get back to me.

On the exhaust manifold. One on each side.

I’m happy to assist further over the phone at https://www.6ya.com/expert/howard_977676954994c5b2

2001 Audi A6
EOBD code: P0420
Fault location: Catalytic converter system, bank 1 - efficiency below threshold
Probable cause: Catalytic converter, wiring, heated oxygen sensor 2 (downstream)

EOBD code: P0430
Fault location: Catalytic converter system, bank 2 - efficiency below threshold
Probable cause: Catalytic converter, wiring, heated oxygen sensor 2 (downstream)

o2 sensor is what it is called the heater is located in the sensor bank 2 would be on the cylinder no 2 side of you car sensor 1 means it is before the cat or on the top of the exhaust nearest to the motor

I have about 15 years experience with Audi/VW. The coolant issue is more like the result of the ECM coolant temp sensor failure. The Cat code might be the front oxygen sensor on that bank and not the front cat. If you need more information about this repair please fell free to contact me at [email protected], I have over 30 years of automotive experience to assist you, thanks.

No, it's either a clogged catalytic converter or, more likely, a bad secondary O2 sensor on the driver's side. The secondary sensor is the one after the catalytic converter, which is used to measure its efficiency. When that sensor fails, the computer can't judge how well the cat is working and often throws a code such as this. However, it should also throw a failed O2 sensor, sensor 2 bank 2, at the same time. You may have a bad cat, but if it comes down to replacing parts, I'd do the sensor first - it's about 15% of the price of a cat.

You could take the two secondary sensors and swap them - move the left side one to the right side and vice versa, clear the code, then scan the car again after running and see if the code comes back the same. If it does, your cat is bad. If it comes back reading a problem on bank 1, it's the sensor.