Hello,
This could be a problem with unwanted high resistance in the Throttle Position Sensor (TPS) circuit. In the diagrams down below I have included the factory diagnostic troubleshooting guide for Direct Trouble Code (DTC) P2135. It will require you to have a code reader with the ability to read the vehicle's PIDS, and use a digital multi-meter (DMM), so here is a link explaining how to use a DMM, if needed, below.
https://www.2carpros.com/articles/how-to-use-a-voltmeter
Please go through these guides and get back to us with what you are able to find out.
Thanks,
Alex
2CarPros
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Tuesday, September 3rd, 2019 AT 10:32 AM