P0510 Code

Question

Hi everyone. Today I took my 1999 Montero Sport to Autozone to retrieve the code that triggered the "check engine light" It has a 3.0L engine.
The code retrieved was P0510 which is Accelerator Pedal Position ( APP) switch circuit with the following causes:
1- Open or short circuit condition
2- Poor electrical connection
3-Faulty APP
I work for a municipality and many trucks and pickups there have an electronic accelerator pedal and it's understandable that an Accelerator Pedal Switch (APP) is present but for sure I know that my monty have a cable accelerator, not an electronic one. According with this, how come Autozone detected a code like this unless this APP is located somewhere else? Maybe the Autozone scanner is bad and gave me the wrong code. Might be the TPS?
Any comments are welcome.

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