DIAGNOSTIC CODES P0720, P0500, P0173, P0170 AND P0100. WHAT DO THESE MEAN?

  • Tiny
  • Cynthia barnety
  • 2000 Mercedes Benz 430e
  • 180,000 miles

Had car diagnose and these were the codes it gave me.

Saturday, October 29th, 2011 AT 9:02 PM

1 Answer

  • Tiny
  • rivermikerat
  • Expert
  • 6,118 posts

P0720=Electronic transmission control diagnostic trouble code memory
P0500=Vehicle speed sensor signal implausible.
P0173=Fuel trim malfunction.(Leaking intake, injectors, or pressure regulator diaphragm
P0170=Fuel trim malfunction. Same as above.
P0100=MAF circuit malfunction

Sounds like a defective computer or a loose connector.

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Sunday, November 20th, 2011 AT 6:19 AM

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