Code U1403

2005 CHRYSLER 300
130,000 MILES • 3.5L
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SCOTT WOHLFORTH
  • MEMBER
  • 1 POST
Code comes up U1403. What is it and how do I fix it?
Oct 6, 2018 at 9:12 AM
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DANNY L
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 5,648 POSTS
Hello, I am Danny.

The code is showing an implausible fuel level. Is your car's gas gauge inaccurate/not working? I have attached a few pictures showing diagnostic steps. You will need to use a keep code reader/scanner than can show fuel system data. Hope this helps and feel free to ask any questions if needed.Thanks for using 2CarPros.
Danny-

https://www.2carpros.com/articles/how-to-check-wiring
Oct 6, 2018 at 8:07 PM