# 2000 Ford Ranger Check Engine Light

**URL:** <https://community.cartalk.com/t/2000-ford-ranger-check-engine-light/27784>\
**Category:** Maintenance/Repairs\
**Created:** [March 15, 2009, 2:01am UTC](https://community.cartalk.com/t/2000-ford-ranger-check-engine-light/27784 "2009-03-15T02:01:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rfredericks](https://avatars.discourse-cdn.com/v4/letter/r/9f8e36/32.png) [@rfredericks](https://community.cartalk.com/u/rfredericks)\
**Post date:** [March 15, 2009, 2:01am UTC](https://community.cartalk.com/t/2000-ford-ranger-check-engine-light/27784/1 "2009-03-15T02:01:41Z")

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I get the follwoing codes P0171 and P0174 System adaptivefuel too lean (Bank 1) and (Bank 2) respectively. Any ideas on how to repair the problem?

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**Author:** ![mr\_josh](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mr_josh/32/3008_2.png) [@mr\_josh](https://community.cartalk.com/u/mr_josh)\
**Post date:** [March 15, 2009, 2:50am UTC](https://community.cartalk.com/t/2000-ford-ranger-check-engine-light/27784/2 "2009-03-15T02:50:05Z")

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Here’s a handy link:

[http://www.aa1car.com/library/ford\_lean\_codes.htm](http://www.aa1car.com/library/ford_lean_codes.htm)

AFAIK, Rangers with the 4.0L have a history of upper intake manifold vacuum leaks. I’m guessing that’s what you’re seeing.

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**Author:** ![rfredericks](https://avatars.discourse-cdn.com/v4/letter/r/9f8e36/32.png) [@rfredericks](https://community.cartalk.com/u/rfredericks)\
**Post date:** [March 15, 2009, 10:25pm UTC](https://community.cartalk.com/t/2000-ford-ranger-check-engine-light/27784/3 "2009-03-15T22:25:53Z")

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Awesome link. Thanks for the advise. I have not had a chance to work on it since I received the response, but will keep you posted when I do.