What does the p2135 code on a Chevy Equinox mean?

When you see the diagnostic trouble code P2135 on a Chevrolet Equinox, or any similar vehicle, it means there is an issue with the throttle position sensor or switch failing electrically. Usually, there are two sensors for the throttle position, and if the data from one sensor does not match the other, the code P2135 is triggered. This can lead to problems like reduced engine performance, stalling, erratic behavior, or the engine going into limp mode. It is crucial to address this problem promptly due to these symptoms. The possible reasons for this issue could be a faulty throttle position sensor (most likely), a malfunction in the accelerator pedal position assembly, damaged wiring, poor connections, or a problem with the powertrain control module (least likely), which may be misreading the data. It is advisable to start diagnosing the problem by checking the throttle position sensor and then proceeding to investigate further.