OBD-II port is not getting power?

2017 HONDA CRV
126,000 MILES
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MEHDIAB
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  • 2 POSTS
I changed my car battery and after that the key remotes are no longer working and the OBD-II port is no longer getting power.
Mar 27, 2024 at 6:23 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like you had a power surge, and some fuses might have blown. Let's use this guide to check the fuse and in particular the fuse for the OBD2 port which is fuse# 18 in the fuse panel under the hood on the left side.

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

Also, can I ask if the battery was connected backwards? Check out the images (below). Please let us know what happens.
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Mar 27, 2024 at 9:42 AM
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MEHDIAB
  • MEMBER
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Hello. Changning fuse 18 worked so thank you very much for your help. I think there was surge from one of the boosters I used to start the car when the battery was dead. Thank you again!
Apr 3, 2024 at 10:22 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help.
Apr 4, 2024 at 7:41 AM
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