This is due to the park neutral switch not reading park.
I am attaching the info below on how to test this and replace it but here is a guide that will help perform this testing:
https://www.2carpros.com/articles/how-to-check-wiring
This switch is responsible for telling the PCM that the vehicle is in park or neutral so that you can start the vehicle. However, when it does not read park then it will not start. It does read neutral so that it will start there but not park.
Below is the info from the manual that will give the detail needed to complete this.
Please run through this material and let us know if you have questions. Thanks.
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Saturday, June 26th, 2021 AT 7:03 PM