Code P0621-00, not running?

Tiny
REDBONE
  • MEMBER
  • 2012 CHEVROLET TRAVERSE
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
I try to start car, and it turns over, sounds like it hits but won't run, only code I get is p0621-00.
Monday, September 16th, 2024 AT 10:28 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
I don't think this code will keep it from starting, can I ask if the engine sounds normal when cranking over? Can you upload a short video so I can see it?

P0621: Generator Lamp Control Circuit Malfunction

Please go over this video as well:

https://youtu.be/lXLJbuAZ4CE?si=fXfAcFXHgkthoDO0

We can do a compression test to see if the engine is hurt or not.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please go over these guides and get back to us. We need more information to help you.
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Monday, September 16th, 2024 AT 2:26 PM

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