Check engine soon light and check gas cap light turn on?

2002 FORD ESCORT
150,000 MILES • 1.9L
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CHRISTENBERRYBILL
  • MEMBER
  • 1 POST
Check engine soon light and check gas cap light come on when I press the brake pedal.
Mar 30, 2021 at 9:01 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
The check engine light will come on if the gas cap is bad or not on correctly. To be sure lets run the codes this guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Apr 1, 2021 at 12:43 PM
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