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Old 09-10-2024, 01:02 PM   #1
zx9rmal
 
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Drives: '20 ZL1 M6
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Got my first CEL

After 27K miles and 4+ years of ownership I got a CEL. I stopped in at the dealer to have the code scanned. I forgot the actual code but it said O2 sensor, lean to rich, bank 2.

I'll bring it in but anything to be concerned about until I get it to the dealer?

Thanks.
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Old 09-10-2024, 04:27 PM   #2
Joshinator99
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Quote:
Originally Posted by zx9rmal View Post
After 27K miles and 4+ years of ownership I got a CEL. I stopped in at the dealer to have the code scanned. I forgot the actual code but it said O2 sensor, lean to rich, bank 2.

I'll bring it in but anything to be concerned about until I get it to the dealer?

Thanks.
Probably not. Could just be time for a new O2 sensor or you developed a vacuum leak. No sense in guessing if you’re paying a tech to diagnose it.
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Old 09-13-2024, 09:29 AM   #3
zx9rmal
 
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And just like that, the CEL is gone! ��*♂️
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Old 09-13-2024, 11:57 AM   #4
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If it's going lean to rich I would suspect exhaust leak.
It would be nice to know the exact code. Some of these codes require multiple "events" before they will light the CEL.
You could pick up a cheap code scanner to see if there are any "pending" codes.
If it's an O2 sensor going bad the CEL will probably become more frequent and then stay on. That could take weeks to months.
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Old 09-13-2024, 09:05 PM   #5
Vigilante375

 
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Just so you know, you can go to autozone and they'll scan your car for free. No need to go to the dealer and waste 30 minutes and money for them to scan it.
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