Diagnostic codes P0720, P0500, P0173, P0170 and P0100. What do these mean?

Tiny
CYNTHIA BARNETY
  • MEMBER
  • 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 Reply

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 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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