it is the rear sensor bank 1 (the one after the converter)
Is this bank 2 sensor 1 or sensor 2?
bank one is close to the fire wall sensor one is before the cat
O2 sensor heater circuit malfunction (bank 1 sensor 1). You probably have a burned out Bank 1 Sensor 1 O2 sensor. Also check the wiring at the sensor for damage.
Assuming this is a 4.3L engine, bank 2 sensor 1 would be the first O2 sensor located in the exhaust header pipe on the passenger side of the engine.
Bank 1 on that Town car would be the passenger side of the engine. Bank 1 Sensor 1 would be the first O2 sensor in the passenger side exhaust after the engine but before the catalytic converter.
I have just found this. I have the same truck and the same problem. Bank 1 means its on the driver side and sensor 2 is the rear sensor. They come off the exaust.
bank one is the side where number cylinder is sensor 1 is before the cat sensor 2 after the cat
Assuming you have the 4.3 engine, bank 2 sensor 1 would be the O2 sensor threaded into the exhaust pipe directly after the passenger side exhaust manifold.
The bank 1, sensor 3, O2 sensor would be the O2 sensor post cat.
"bank one" is misleading on a four cylinder engine, since there is only one bank to begin with. Bank 1, sensor 1 is the upstream O2 sensor screwed into the exaust system before the catalytic converter. Bank 1 sensor 2 is screwd into the exaust system downstream of the catalytic converter.
on the v6 there are 4. bank one and bank two are the o2 sensors on your exhaust manifolds with bank one being the driver side. there is also one before and one after the catalytic converter
yes