showing a code for all four O2 sensors?

2006 FORD MUSTANG
17,000 MILES • 4.6L • V8 • 2WD • MANUAL
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JONAH123
  • MEMBER
  • 1 POST
I am showing a code for all four O2 sensors. Two weeks ago after a rough drive I had found that a sensor had melted against the exhaust. I replaced the sensor and made sure it would not touch the exhaust anymore. Shortly after replacing the sensor the light came back on and all four sensors were throwing codes. The car runs pretty rough once I get it to about 1800+ RPMs. There is an aftermarket exhaust and headers.
Dec 30, 2022 at 6:42 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,165 POSTS
Yep, I have seen this problem before and the PCM is bad, here is the location and how to change it out in the images below. You can get a rebuilt unit by searching Google or eBay. Check out the images (below). Please let us know if you need anything else to get the problem fixed.



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Dec 31, 2022 at 1:39 PM
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