Issue with throttle position sensor and Check Engine light is on.

The Check Engine lights is on and the power locks do not respond to remotes. The throttle position sensor has come on, however, it goes off after restarting the car.
Experienced mechanics share their insights in answering this question :
I’m not quite sure what to make of this description, but I’m guessing you are trying to say the check engine light goes off and on intermittently with a code stored for the throttle position sensor (TPS). I do not have the wiring diagram for this vehicle handy, but I doubt the problems with the TPS has anything to do with the inoperative remotes. The TPS and its corresponding circuit will need to be diagnosed for faults. Then the power lock issue will have to be addressed separately. The door lock module, or anti-theft module, may simply need to be reprogrammed to recognize your keys. A trained technician, such as the ones at YourMechanic, will be able to help you diagnose both issues.

How to Identify and Fix Common car Problems ?

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Illuminated Check Engine Light

If your car has a loose TPS connector (wire) or the throttle sensor fails to monitor throttle functioning properly, it will affect the engine performance, and the engine will trigger the Check Engine Light in response.

Common signs include lacking power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on.
A malfunctioning TPS will cause your engine to run poorly. Generally the engine will idle fine but will have difficulty accelerating. This is because the computer isn`t telling the engine to inject as much fuel as is required, while at the same time airflow is increasing.
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
Faulty throttle and pedal position sensor

Any problem within the TAC system can cause the reduced engine power warning light to go on. One of the more common reasons includes one or both APP sensors in the accelerator pedal or the pair of TP sensors.

Accelerator Pedal Release Position Learning Procedure.

Make sure that the accelerator pedal is fully released. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds. Turn ignition switch “ON” and wait at least 2 seconds.

a faulty tps can set a trouble code in the computer if the voltage value is either not present, sporadic, slow or constant, and this can illuminate your check engine light.
A P0122 code is the generic OBD-II code defined as “Throttle Pedal Position Sensor/Switch (TPS) A Circuit Low Input.” This code relates to the vehicle`s Engine Control Module (ECM) and TPS Sensor Circuit A output voltage and is triggered when the voltage falls below the sensor`s anticipated range.

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ANSWER : Hi there. What you received from the parts store was a code retrieval, not a diagnostic. The codes are set when a fault is detected against normal operating parameter. The computer does not know what caused the fault, only that the fault meets the criteria for this code to set. There could be a problem in the wire harness, converter, or the ECM. The code and data are needed to properly assess the direction that a diagnosis needs. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a check engine light inspection.

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Since this fault has lasted after the engine was replaced it could be a oil pressure sensor, wiring harness fault, ECU fault, oil pump, oil strainer clogged, or low oil pressure.

To diagnose this issue properly you need a complete vehicle inspection to start from square one and identify the root cause of all this.

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