Smog functional check

1999 CHRYSLER TOWN AND COUNTRY
161,000 MILES • 3.8L • 6 CYL • FWD • AUTOMATIC
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FRANK LENTI
  • MEMBER
  • 2 POSTS
My van failed smog. Mil/check engine light due to OBD communication failure.

Ignition timing check due to engine rpm being out of tolerance.


What could the problem's? do I have to get a new computer for my van or what could cause this?
Feb 13, 2017 at 12:42 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
you need to have a mechanic check for a broken wire/bad connection etc. he has to scan for codes to see where to start.
Feb 13, 2017 at 1:11 PM
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FRANK LENTI
  • MEMBER
  • 2 POSTS
How will he scan for codes if the OBD will not communicate with the scanner?
Feb 14, 2017 at 2:01 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
because some scanners will not work and others will. besides he will check why it is not communicating anyhow to get it to read.
Feb 14, 2017 at 5:38 AM
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