I replaced the throttle position sensor on my ,02 hyundai santa fe,now it will not shift gear and check engine light is on with throttle position sensor circuit A high voltage, how can I fix this

I would check the engine coolant temperature switch 1st.

ACEELERATOR PEDAL POSITION SENSOR IS USUALLY BUILT INTO ACCELERATOR PEDAL ASSEMBLY .........LOOK FOR WIRES COMING OUT OF ACCELERSTOR PEDAL ASSEMBLY ON THE INSIDE OF CAR NEAR OR UNDER ACC PEDAL ASSEMBLY

see no check engine light. need to have throttle control module check or tps sensor but need diagnostic equipment to check it.dealership has to check it out.

you could have bad 02 sensors, your car should have 4 of them.

The 04 Santa Fe came with three different engines. 4 cylinder (2.4 lit), and two different V6's (2.7 lit & 3.5 lit). The 2.4 & 2.7 use throttle cables connected directly to the throttle plate, but the 3.5 uses ETS (Electronic Throttle System) which uses two sensors (APS & TPS) and a control module (ETSCM). APS=Accelerator Position Sensor, TPS=Throttle Position Sensor, ETSCM= Electronic Throttle System Control Module. There are different diagnostic procedures for each system.
Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop manuals, service bulletins, campaigns, illustrations and procedures, etc.

Bench test the throttle position sensor. If you find any bad spots, replace it

Check the throttle position sensor.

You might try testing the tps. It may have a dead spot at the high end of the throttle opening. Make sure the resistance continues to change as you open the throttle all the way.

Throttle Position Sensor

Operation The throttle position sensor is a rotating type variable resistor that rotates with the throttle body-s throttle shaft to sense the throttle valve angle. As the throttle shaft rotates, the throttle angle of the sensor changes and the ECM/PCM detects the throttle valve opening based on the TPS output voltage.
Removal & Installation

1. Disconnect the negative battery cable.
2. Disconnect the sensor connector.
3. Remove the sensor retaining screws. Remove the sensor from its mounting.

To install:

1. Installation is the reverse of the removal procedure.

Testing 2.4L Engine

1. Disconnect the sensor connector.
2. Measure the resistance between terminal 1 (sensor ground) and terminal 2 (sensor power).
3. Specification should be 3.5-6.5 kohm.
4. Connect and analog ohmmeter between terminal 1 (sensor ground) and terminal 3 (sensor output).
5. Operate the throttle valve slowly from the idle position to the full open position, and check that the resistance changes smoothly in proportion with the throttle valve opening angle.
6. If the resistance is out of specification, or fails to change smoothly, replace the sensor.

2.7L Engine

1. Disconnect the sensor connector.
2. Measure the resistance between terminal 2 (sensor ground) and terminal 1 (sensor power).
3. Specification should be 3.5-6.5 kohm.
4. Connect and analog ohmmeter between terminal 2 (sensor ground) and terminal 3 (sensor output).
5. Operate the throttle valve slowly from the idle position to the full open position, and check that the resistance changes smoothly in proportion with the throttle valve opening angle.
6. If the resistance is out of specification, or fails to change smoothly, replace the sensor.

1. Disconnect the sensor connector.
2. Measure the resistance between terminal 2 (sensor ground) and terminal 1 (sensor power).
3. Specification should be 1.6-2.4 kohm.
4. Connect and analog ohmmeter between terminal 2 (sensor ground) and terminal 3 (sensor output).
5. Operate the throttle valve slowly from the idle position to the full open position, and check that the resistance changes smoothly in proportion with the throttle valve opening angle.
6. If the resistance is out of specification, or fails to change smoothly, replace the sensor.

3.5L Engine

1. Disconnect the sensor connector.
2. Measure the resistance between terminal 3 (sensor ground) and terminal 1 (sensor power).
3. Specification should be 3.5-6.5 kohm.
4. Connect and analog ohmmeter between terminal 3 (sensor ground) and terminal 2 (sensor output).
5. Operate the throttle valve slowly from the idle position to the full open position, and check that the resistance changes smoothly in proportion with the throttle valve opening angle.
6. If the resistance is out of specification, or fails to change smoothly, replace the sensor.

Im having the same problem with my 02 Santa Fe. How do i go about fixing this problem? And is it costly? Please help

TRY THESE TWO (2) THINGS..
Step 1: Disconnect the battery cables and touch them together for 30 seconds (this ZERO'S out the PCM/ECM (Power Train Control Module/Engine Control Module). If there's GARBAGE in memory of this computer (PCM/ECM), this should CLEAR it.
Step 2: Check the Throttle Position Sensor (TPS, it's a potentiometer) for any ERRATIC resistance changes at idle position or any other position for that matter. If you find, what I call BAD SPOTS, in the TPS, replace it. I know of NOTHING ELSE which would cause the problem you describe and NOT turn on the "Check Engine" light