2003 Ford Expedition 03 Expedtion Check Engine Lite Come Onwith Code Po420

2003 FORD EXPEDITION
17,800 MILES
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GUS360
  • MEMBER
  • 2 POSTS
I have an 03 ford expedtion and the check engine lite come onwith the code po420 &po430. I have a little bit of white smokeing come out the muffler what can it be.
Feb 27, 2013 at 8:30 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
cat converters are worn out and need to be replaced.

Roy
Feb 28, 2013 at 2:14 AM
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