check engine light

1997 FORD THUNDERBIRD
90,000 MILES • V8 • 2WD • AUTOMATIC
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JDHAYES
  • MEMBER
  • 1 POST
pull codes all codes 02 related circuit and 2 sensor, 1 sensor 1, and 2 sensor, 1 sensor 2 on. how it is real code for every sensor?
Jun 29, 2017 at 9:57 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
You need to know the exact fault code numbers. There's a bunch of them, and they mean very different things. When you have a lot of codes suddenly show up at the same time, look for what they have in common. In this case the wiring harness is a real good suspect. Look for wires that fell down onto hot exhaust parts, or corroded connector terminals.
Jul 1, 2017 at 7:29 PM
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