Electrical Problem Explained
Just because the check engine light came on for a particular part it does not mean that part is bad.
There have been many cases where the vehicle has had an electrical problem causing the check engine light to come on and the part was good.
Bad Throttle Position Sensor:
Here are some examples that will generate a Bad TPS Code:
An open in the feed circuit, an open within the sensor itself will feed low voltage to the Power Train Control Module, “PCM” on the signal wire.
Once the PCM see’s a voltage out of range, PCM will set a code for low TPS voltage.
How about high resistance on the ground circuit or better than that no ground, will rise the signal voltage, and the Power Train Control Module “PCM’ will set a code high TPS voltage.
Also, remember a bad Throttle Position Sensor “TPS” will affect how a vehicle performs or an electronic transmission shifts.