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1998 Honda CRV Engine Code P0170 & P0171

Tiny
CHEESEHEAD
  • MEMBER
  • 1998 HONDA CRV
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 158,000 MILES
The engine light came on my car. We scanned the car and codes P0170 & P0171 came up. Can you tell me what these codes mean? . And what is my next step for a vehicle with almost 160K miles.

Thanks!
Tuesday, May 4th, 2010 AT 2:30 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0170 is fuel trim Bank 1 and P0171 is system too lean Bank 1. I have seen a clogged fuel filter cause this here is the location so you can check it out, also if the filter is new then I would check for vacuum leaks. Here are too guides that can help.

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

and use this guide when the engine is cold only.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

If everything checks out I would replace the MAP sensor. Check out the images (Below). Please let us know what you find. We are interested to see what it is.

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Tuesday, May 4th, 2010 AT 4:18 PM

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