What is the issue P0697 code?

Tiny
KEITH BEAL
  • MEMBER
  • 2012 BUICK REGAL
  • 145,000 MILES
P0697 I'll replace the mass air flow sensor I also replaced all the relays And new air filter install I also did a hard reset by unplugging the battery terminals and letting it sit for over 40 minutes to reset the computer and it's still pops up the same code.
Wednesday, June 19th, 2024 AT 3:15 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,480 POSTS
The P0697 code is related to the sensor reference voltage. Specifically, this code indicates a problem with the "Sensor Reference Voltage 'C' Circuit Low."

It sounds like the battery is bad or the voltage sensor has gone out, here is a guide to help you load test the battery or you can take it to the auto parts store for testing.

https://www.2carpros.com/articles/car-battery-load-test

Clear the codes once the repair has been completed. Check out the images (below). Let us know if you need anything else.

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Wednesday, June 19th, 2024 AT 7:11 PM
Tiny
KEITH BEAL
  • MEMBER
  • 1 POST
Man, it was the voltage sensor this little part. Man, it has been ordered and thank you.
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Thursday, June 20th, 2024 AT 9:15 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,480 POSTS
Thanks for letting us know, we are here to help, please use 2CarPros anytime.
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Thursday, June 20th, 2024 AT 9:16 AM

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