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Ford OBD1 codes? CEhck engine light on?

Tiny
ZEIK1154
  • MEMBER
  • 26 POSTS
  • 1991 FORD EXPLORER
  • 4.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Check engine light on. It runs good, starts good. What are causes for this alert all in a sudden?
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Wednesday, January 6th, 2021 AT 2:36 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

You need to have the code scanned. You can have this done at a parts store for free. Once I know the code, I can further help you.

There are over 2,000 codes and that is why we need the exact code.

Roy
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Wednesday, January 6th, 2021 AT 2:36 PM (Merged)
Tiny
ZEIK1154
  • MEMBER
  • 26 POSTS
Where is the plug in for computer?
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Wednesday, January 6th, 2021 AT 2:36 PM (Merged)
Tiny
RENEE L
  • ADMIN
  • 1,257 POSTS
Hello,

Here is a link to an article from this site that features written step by step instructions and pictures explaining how to scan for codes yourself:

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

https://youtu.be/YV3TRZwer8k

Thank you for using 2CarPros.

Renee
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Wednesday, January 6th, 2021 AT 2:36 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The connector is under the hood left side, back by the firewall. I attached a diagram of the connector.

Roy
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Wednesday, January 6th, 2021 AT 2:36 PM (Merged)

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