Where is the fuse that powers the OBD2?

2005 GMC ENVOY
160,000 MILES • 6 CYL • 4WD • AUTOMATIC
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KSCARQUES#1
  • MEMBER
  • 2 POSTS
OBD2 has no power when code/diagnostic plugged in.
Mar 17, 2022 at 9:39 PM
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WENDY W
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 86 POSTS
Hello,

It looks like the data link connector should be fuse 13 in the underhood fuse block on the left side of the engine compartment. Please see the diagram below.

Here's a link to OBD2-code definitions:
https://www.2carpros.com/trouble_codes/obd2

This video guide gives some tips on what to do when the OBD-2 port isn't working:
https://youtu.be/6Tlg3JmgNSQ

If you need any further assistance, please let us know.

Thanks, Wendy W.
Mar 18, 2022 at 12:22 PM
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KSCARQUES#1
  • MEMBER
  • 2 POSTS
Thank you very much Ms. Wendy I'll give it a try.
Mar 18, 2022 at 6:22 PM