Codes $7E8, $7E9, and flashing check engine light?

2015 JEEP WRANGLER
88,000 MILES • 3.6L • V6 • 4WD • AUTOMATIC
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LEFE GARY
  • MEMBER
  • 1 POST
Check engine keeps flashing. Flashing then solid then repeats every few seconds. Shows as werorcides$7E8 and #7E9 on reader. One year ago, a similar error turned out to be a faulty injector.
Sep 21, 2022 at 4:18 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

What you have, $7E8 & $7E9, are not codes. They are module addresses for the powertrain control module (PCM) and the transmission control module (TCM). Most codes retrieved will start with the letter P and be followed by 4 numbers. For example, P0301 indicates a cylinder one misfire.

Most times when the check engine light flashes, it indicates a misfire. I suspect the procedure you are using to retrieve codes is missing a step.

Take a look through this quick video and let me know if it helps:

https://youtu.be/b2IJGfImVvw

Let me know.

Joe
Sep 21, 2022 at 1:43 PM
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