Hello, welcome and thanks for asking your question. My name is*****'m a Certified Auto Technician with 28+ years experience. I will do my best to assist you. please keep in mind that I may need to ask questions of you before I can answer. When you reply please feel free to add as much detailed information as possible pertaining to your concern.
At this time, it is looking like you will need to diagnose the APPS Sensor Circuit (accelerator pedal position sensor).
Most likely, the sensor itself is faulty and needs to be replaced but it is also possible that there is a wiring issue or the PCM has failed.
I'm going to post the diagnostic procedure for you. If you have the knowledge and tools, you can perform this procedure yourself. You may need a scanner for some tests but may be able to get around using the scanner if one is not available...
Attachment: Click Here
Keep me posted and let me know if you have any additional questions...
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Thank you and thanks for asking your question!