Does not start, no fire? p0920, p0921, and p0999 codes.

1998 DODGE DURANGO
217,958 MILES • 5.2L • V8 • 4WD • AUTOMATIC
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KENDALLROCK23.JK
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It won’t start shows no bus near odometer plus p0920, p0921, and p0999 codes.
Dec 13, 2023 at 9:39 AM
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STRAILER
  • Experienced Mechanic
  • 55,238 POSTS
These codes and the fact that the engine will not start is telling us we need to check the fuses primarily.

Here is a guide to help please check the fuses with the key on:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

I can tell you I have seen the instrument cluster cause problems like this so if the fuses are good, it could be bad, we should do a complete CAN scan which is easy to do. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:


https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

P0920 - Gear Shift Forward Actuator Circuit/Open:

P0921 - Gear Shift Reverse Actuator Circuit/Open:

P0999 - Shift Solenoid "F" Control Circuit High:

So, I assume the engine is cranking over but not running is this correct? Please go over this guide and get back to us.
Dec 14, 2023 at 5:15 AM
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