It is the sensor below the catalytic converter.
You can't repair an o2 sensor,You'll half to replace it
You can find it in the cylinder head next to the oxygen sensor harness.
After the catalytic converter on the same side as cylinder #1
Both codes indicate a problem with the oxygen sensor on Bank 1 Sensor 2. Bank 1 is the side off the engine with the number one cylinder. If there are more than one oxygen sensors on that side then Sensor 2 would be the second one.
That would be the sensor after the catalytic convertor.
Downstream O2s are on the outlet side of the catalytic converter(s).
bank 1 is the bank that cylinder 1 is on
Oxygen sensor heater malfunction (cylinder bank #2, sensor #1)
on cylinder 1 side mounted on the manifold
bank 2 is the opposite side of cylinder #1. check the plugwires to see what side #1 cylinder is on and its the other side oxygen sensor
Heated oxygen sensor heater circuit malfunction (bank 1, sensor 1): Open or short in heated oxygen sensor heater circuit Heated oxygen sensor heater malfunction (Haynes Repair Manual)
O2 sensor in the exhaust manifold near the engine
It does not have a maf sensor.
Bank 2 is the drivers side of the engine Sensor 1 is in the exhaust before it enters the catalytic converter ( upstream )
The oxygen sensor for bank 1 sensor 1 for a 2000 mercury mountaineer is on the cylinder #1 side.
oxygen sensor is usually in the rear of the exhaust maifold or in the exhaust pipe itself
According to my Chilton repair manual engine wiring schematics there is ( 1 ) on the 4 cylinder and ( 2 ) for the V6 engines in a 1994 Ford Ranger
replace it..It should screw right in with a wrench.
Bank one is the side of the engine with cylinder #1. Sensor 2 is after the catalytic converter.
Bank 1 is the part of the exhaust stream that includes cylinder #1. Sensor 2 is after the catalytic converter.
If your 1988 Chevrolet Celebrity has the V6 engine the oxygen sensor is in the middle of the exhaust manifold nearest the firewall. If you have the 4 cylinder engine the oxygen sensor is located in the exhaust manifold just above the exhaust pipe flange.
Bank 2 relates to the sensor on the opposite side of the engine as cylinder one. And if your talking about an Oxygen sensor, then sensor 1 is before the catalytic converter.