How do you change oxygen sensors on a 2000 hyundai sonata

The step by step procedure of changing O2 sensor in 2000 Hyundai Sonata GLS can be found in the following link:

http://www.ehow.com/how_7211340_do-sonata-gls-oxygen-sensor_.html

check ignition fuse if fuse okay problem in ignition coil or ignition module crankshaft sensor camshaft sensor.fault could be in the ecu best to code scan vechicle before buying new parts.many things will cause no spark conditions.

B1S1 is refering to the Oxygen sensor that is BEFORE the catalytic convertor in the exhaust manifold that has the #1 cylinder. B is Bank and S is sensor

The bank has to do with which side of the engine. The 'Sensor 1' indicates that it is upstream of the catalytic converter.

Heated Oxygen Sensor Removal & Installation Heated Oxygen Sensor (Front) (2.4L)

Heated Oxygen Sensor (Rear) (2.4L)

Heated Oxygen Sensor (Bank 1/Sensor 1) (3.3L)

Heated Oxygen Sensor (Bank 1/Sensor 2) (3.3L)

Heated Oxygen Sensor (Bank 2/Sensor 1) (3.3L)

Heated Oxygen Sensor (Bank 2/Sensor 2) (3.3L)

My online Sonata manual shows these possibilities, but does not identify which applies specifically to 2000 Sonata.
Also, when you talk to the dealership parts counter, you'll need to know whether your 2000 Sonata is (a) 4-cylinder 2.4L MFI DOHC engine, or (b) 6-cylinder 2.5L MFI DOHC engine.
Its easy to tell - just count your spark plug wires.

-- begine excerpt from 2000 Hyundai Sonata Repair guide --

The crankshaft position sensor is located next to the flywheel.
The crankshaft position sensor is located next to the flywheel/torque converter.
The camshaft position sensor is located on the engine near the timing belt cover and under the upper radiator hose.
The crankshaft position sensor is located on the driver-s side of the vehicle, down by the lower radiator hose.
The crankshaft position sensor is located on the engine near the crankshaft pulley.
The crankshaft position sensor is located at the front of the engine near the timing belt.

--- end excerpt from 2000 Hyundai Sonata repai guide ---

no, make sure the elec. connections from the tranny are clean and secure.

Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.

The sensor is located on the left hand rear side of the block (near the bell housing). It is held in place by a 10mm bolt. It's to the right of the exhaust manifold (LH - radiator side) on the V6. Once you purchase the new sensor you'll be able to identify it on the engine. The connector to this sensor is located in the illustration.
A word to the wise... replace the O2 snsr as well.

change the coil pack.