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PO170,173 Fault codes

Tiny
DANOMOTIVE
  • MEMBER
  • 1917 MERCEDES BENZ
1998 e320 Mercedes 44,000 miles has fault codes PO170, PO173 (fuel management) ANY HELP? It has turned on the MIL and they won't smog it. I'm in So Cal. By the way the o2 sensors have been replaced.
DAN NEWMAN
Friday, July 20th, 2007 AT 8:26 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Those are both fuel trim problems. Check all vacuum lines real close for leaks. Could be the Mass Airflow Meter out of range, giving incorrect air readings and throwing the rest of the mixture control off. PM me back
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Saturday, July 21st, 2007 AT 8:44 AM

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