P0120 fault code

Good evening I

need you to give me an orientation please happen that the engine check was turned on and I showed the P0120 code what it means it seems to have to do with the accelerator.

The car is accelerated but I change the minimum valve and the temperature sensor long ago.

Thanks in advance

P0120 DTC - TPS A malfunction of the circuit
The TPS (accelerator position sensor) is a potentiometer that is mounted on the accelerator body. The angle of the accelerator leaf is detected. As the blade moves from the accelerator, the TPS sends a signal to the PCM (motor train control module). In general, a three -wire sensor: a 5 volt reference from the PCM for the TPS, a PCM floor for the TPS, and a return of the TPS signal to the PCM.
The TPS sends the butterfly position information back to the PCM in this signal cable. When the accelerator closes the signal is about 0.45 volts. In WOT (fully open butterfly) the TPS signal voltage will approach a total of 5 volts. When the PCM sees a voltage that is outside the normal operation range, P0120 will put.
Note: The PCM knows that any great change in the accelerator position means a change in collector pressure (MAP). In some models the PCM will supervise MAP and Operation TPS for comparison. Which means that if the PCM sees a large percentage of change in the accelerator position, it is expected to see a change in collector pressure and vice versa. . This does not apply to all models.
SYMPTOMS
Potential symptoms include:
one thousand (Failure indicator lamp) Lighting

Ignition
failures at idle or
Malo Inactive Highway Spee
Possible solutions
if you have access to an analysis tool, with KOEO (engine key) Observe the voltage of the TPS. With the accelerator closed, the voltage must be 0.45 volts. I should gradually sweep up to approximately 4.5 to 5 volts how the accelerator is sought. Sometimes only an instrument can capture an intermittent failure in the TPS signal voltage. If you notice a technical problem in the tps sweeping voltage, change the TPS. Note: Some TPS sensors require fine adjustment. If you do not feel comfortable with the use of a digital multimeter (OHM digital voltmeter) to adjust the new TPS, then it is best to take the vehicle to a workshop. If the voltage is not 0.45 volts (+ O-0.3 volts or less) with the closed accelerator or if the reading is "stuck" below, unleashed the TPS connector. With KOEO check 5 volt volts present in the connector and a good floor. You can check the continuity signal circuit, jumping from a cable with a fuse between the mass circuit of the TPS connector and the signal circuit. If the reading TPS in the analysis tool is already at zero, re -place the TPS. However, if that does not change the reading to zero, then throw an open or a short circuit in the signal cable and if none is found, suspect a bad PCM. If the manipulation of the TPS wiring causes any change in rest and then suspect bad TPS. Another related TPS and DTC sensor Circuit: P0121, P0122, P0123, P0124