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Smog functional check

Tiny
FRANK LENTI
  • MEMBER
  • 1999 CHRYSLER TOWN AND COUNTRY
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 161,000 MILES
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?
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Monday, February 13th, 2017 AT 12:42 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
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.
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Monday, February 13th, 2017 AT 1:11 PM
Tiny
FRANK LENTI
  • MEMBER
  • 2 POSTS
How will he scan for codes if the OBD will not communicate with the scanner?
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Tuesday, February 14th, 2017 AT 2:01 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Because some scanners will not work and others will. Besides he will check why it is not communicating anyhow to get it to read.
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Tuesday, February 14th, 2017 AT 5:38 AM

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