MIL warning light turns on intermittently and there is a vibration?

Tiny
FRANKFARBENBLOOM
  • MEMBER
  • 2016 HYUNDAI SONATA HYBRID
  • AUTOMATIC
  • 89,000 MILES
It stays on for a few seconds (19-20). At the same time there is a vibration in the car as if something was loose. Two days ago it came on four time on a trip that lasted about 40 minutes. Each time was different although the last was the longest with much stronger vibration. Yet on the way home, about 2 hours later, it never came on.

Hyundai service mechanic checked it out but could not find anything wrong. That didn't surprise me because it is an "intermittent". However the next day the same thing happened one time in a journey of about 2 miles then didn't happen with a follow-up trip of about 20 miles.

Thanks
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Sunday, August 14th, 2022 AT 2:18 AM

3 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

These types of intermitted issues can be tricky to diagnose. Without having the symptoms, it is difficult to diagnose.
Given that, you might want to scan the vehicle and see if there are any stored error codes. Which can help with the diagnostics.
Most auto parts stores will have scanners that can be used to retrieve error codes, both live and stored ones.

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

Let me know of any questions.
Thank you.
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Sunday, August 14th, 2022 AT 10:13 AM
Tiny
FRANKFARBENBLOOM
  • MEMBER
  • 2 POSTS
Thank you. Have passed on the suggestion to the dealer.
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Tuesday, August 16th, 2022 AT 6:31 AM
Tiny
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  • MECHANIC
  • 6,383 POSTS
You are welcome.
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Wednesday, August 17th, 2022 AT 9:41 AM

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