Hello,
The code P1543 gets triggered when there is an issue with the throttle valve control module.
This explains why the engine does not idle.
This issue could be due to a faulty module or issue with the wiring.
I have attached the trouble shooting guide for the code P1543 below.
Go through these steps and that should help you narrow down and determine the issue.
You will need a multimeter to perform the diagnostics.
Please let me know if you have any questions.
Thank you.
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Thursday, January 6th, 2022 AT 12:43 PM