How to repair codes P1166 and P1167?

2002 HONDA CRV
131,000 MILES • 4 CYL • 4WD • AUTOMATIC
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LARRYTHEFIZZ
  • MEMBER
  • 2 POSTS
Two codes coming up, P1166 and P1167. Heater Circuit fault what is it, and how to fix?
Sep 2, 2009 at 11:06 AM
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KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
These are o2 sensor codes. So, we need to run through the testing attached in order to determine what the issue is.

However, here are a couple of guides that will help with this:

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Please follow the testing below and let us know what questions you have, and we can go from there.

Thanks
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Dec 29, 2021 at 5:00 PM
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