Engine shuts off when smog reader is plugged in

2006 JEEP GRAND CHEROKEE
180,000 MILES • V8 • 2WD • AUTOMATIC
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JIMMATTSON6
  • MEMBER
  • 3 POSTS
There is no engine light on. Had the transmission rebuilt last year, they replaced the computer board in it. I need to get the car smogged, but when they plug the reader into the car, the car turns off. Any ideas?
Jul 24, 2018 at 1:30 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning.

Have you had any other shop try to plug in to your car?

Go to a parts store and see if they can connect. It may be the smog testers computer.

Roy
Jul 24, 2018 at 7:54 PM
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JIMMATTSON6
  • MEMBER
  • 3 POSTS
Hi Roy, I have had the same issue at two different smog stations.
Jul 25, 2018 at 1:08 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Yep, they all use the same machines and the same software.

That is why I suggested to try a parts store to see if they can communicate with the modules.
Otherwise you may have a failed PCM.

Roy
Jul 25, 2018 at 1:12 AM
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JIMMATTSON6
  • MEMBER
  • 3 POSTS
Thanks Roy, I will take it into a parts store.
Jul 25, 2018 at 1:30 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Okay, keep me updated.
Jul 25, 2018 at 1:37 AM
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