1998 Honda CRV Engine Code P0170 & P0171

1998 HONDA CRV
158,000 MILES • 4 CYL • AWD • AUTOMATIC
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CHEESEHEAD
  • MEMBER
  • 1 POST
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!
May 4, 2010 at 7:30 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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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May 4, 2010 at 9:18 AM
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