Hello,
The code P1537 indicates that the intake manifold runner system is stuck open.
It is likely due to a faulty vacuum actuator for the runner system.
It could simply be a issue with the wiring as well.
I have attached the diagnostics for the code as well as replacement procedure for your reference.
https://www.youtube.com/c/2carpros/featured
Please let me know of any questions.
Thank you.
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Friday, September 3rd, 2021 AT 1:46 PM