Diagnostic codes p0720, p0500, p0173, p0170 and p0100. What do these mean?

2000 MERCEDES BENZ 430E
180,000 MILES
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CYNTHIA BARNETY
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  • 1 POST
Had car diagnose and these were the codes it gave me.
Oct 29, 2011 at 9:02 PM
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RIVERMIKERAT
  • ✓ASE Certified Mechanic
  • 6,110 POSTS
  • ASE Certified Mechanic
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.
Nov 20, 2011 at 6:19 AM
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