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Car is showing 3 error codes


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L. Stacy
Novice

Mar 8, 2020, 10:02 AM

Post #1 of 10 (362 views)
  post locked   Car is showing 3 error codes  

Hey all,
2016 Buick Encore, 23,873 miles, 1.4 engine. Definitely misfiring, though intermittent. Check engine light illuminating steady with these error codes: P0171, P0496 & U0109. Nothing wrong with gas cap. Towing it in to the dealership next week, but just curious what you all think the issue/issues might be.
Thanks for your insight!
L.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 8, 2020, 12:11 PM

Post #2 of 10 (354 views)
  post locked   Re: Car is showing 3 error codes  

Low mile & fairly new it's possibly been manhandled doing some other service - IMO. It can't communicate for fuel pump now so others are from that most likely,


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 8, 2020, 12:29 PM

Post #3 of 10 (349 views)
  post locked   Re: Car is showing 3 error codes  

The important code here is the P0171. That is a lean condition that needs to be found. The EVAP code isn't effecting the running and the other code is a communication code with one of the modules somewhere.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



L. Stacy
Novice

Mar 8, 2020, 12:43 PM

Post #4 of 10 (345 views)
  post locked   Re: Car is showing 3 error codes  

Thanks, guys. Also wanted to mention that a few seconds after I turn the ignition off, the car shakes a little and the engine rumbles.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 8, 2020, 1:39 PM

Post #5 of 10 (337 views)
  post locked   Re: Car is showing 3 error codes  

That's an indication that you have a bad vacuum leak causing dieseling which would be the cause of the lean code.

If anyone has recently done anything to the engine double check that they didn't leave any hoses disconnected.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



L. Stacy
Novice

Mar 8, 2020, 3:02 PM

Post #6 of 10 (330 views)
  post locked   Re: Car is showing 3 error codes  

Thank you. I did have a new engine cradle put in after an accident last year, but the engine itself was fine.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 8, 2020, 3:07 PM

Post #7 of 10 (328 views)
  post locked   Re: Car is showing 3 error codes  

No, I was thinking more like replacing an air filter or oil change.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



L. Stacy
Novice

Mar 8, 2020, 3:18 PM

Post #8 of 10 (320 views)
  post locked   Re: Car is showing 3 error codes  

Gotcha. Had both of those done in December.


L. Stacy
Novice

Mar 10, 2020, 5:14 PM

Post #9 of 10 (294 views)
  post locked   Re: Car is showing 3 error codes  

Just wanted to provide an update. Dealership installed a new purge valve. Car runs as good as new!
Thank you to everyone for your suggestions and input. I very much appreciate it.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 10, 2020, 5:34 PM

Post #10 of 10 (292 views)
  post locked   Re: Car is showing 3 error codes  

Yep, that was your vacuum leak. Thanks for letting us know.

I'll close this now as solved.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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