Codes PO171 and PO174 what are these codes for?

Tiny
BBARRETO
  • MEMBER
  • 1996 GMC JIMMY
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 10,030 MILES
Please tell me what these codes stand for and the diagnosis.
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Thursday, April 15th, 2010 AT 11:08 AM

1 Reply

Tiny
SEAN M
  • EXPERT
Hello,

Here are the codes:

P0171 Fuel Trim System Lean Bank 1
P0174 Fuel Trim System Lean Bank 2

https://www.2carpros.com/articles/check-engine-light-clear-codes

See attached for the diagnostics.

Thank you.
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Thursday, July 15th, 2021 AT 8:43 PM

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