Where is the location of O2 sensor bank1. It is for Hyundai sonata 2000 2.4 L

Bank 1 is the bank of cylinders on the firewall side
Bank 2 is the bank of cylinders on the radiator side
Sensor 1 is the O2 sensor before the cat
Sensor 2 is the O2 sensor after the cat

The camshaft position sensor is located on the engine near the timing belt cover and under the upper radiator hose.

Usually these are located on the exhaust manifold or just below the exhaust manifold and you should be able to see it in the engine bay. On V6 engines there will be one sensor on each of the 2 exhaust banks.
You will probably need to remove the engine cover to see the sensors on your exhaust.

If someone told you to replace these because you got a particular fault code I would be wary. A decent scan tool and basic diagnostics can show if the 02 sensor is working or not. Some faults often blamed on an 02 sensor are not due to faulty sensors.

Here's a picture to your cylinders,number one cylinder is at that side exhaust manifold,the sensor is screwed into it. Specifications Firing Order AutoZone com

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

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 ---

where is the O2 sensor bank 1 located in Hyundai sonata 2000

this is fairly common with these o2 sensors. replace the one that has failed. they have a 4 wire set up that incorporates a circuit for a preheater that warms up so it reads more efficiently and even controlls emissions at start up. there is a fuse under the hood on the left side for o2 sensor heater circuit. check this first and then replace if necessary.

The not ready may be for a HEATED O2 sensor and HEATED catalyst. Since these cars are not equipped with the HEATED versions, they would never be ready.

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.