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18158 P1750 Power Supply Voltage Low Voltage

Audi A6 The mid-sized Audi A6 model offers more room to the driver and passengers over the A4 line.

18158 P1750 Power Supply Voltage Low Voltage

  #1  
Old 02-10-2011, 10:39 AM
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Default 18158 P1750 Power Supply Voltage Low Voltage

18158 P1750 Power Supply Voltage Low Voltage.
What does it mean?
 
  #2  
Old 02-10-2011, 02:59 PM
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Did you check the Carfax before you bought it - was it a "flooded" car?
If it had/has a clean carfax report, is it possible that the passenger side front footwell got flooded or wet?
I suppose the first thing I would do is check the TCU for water ingress problems. While you're there you may want to check the voltage supply at the TCU, perhaps even during cranking, to make sure it isn't going too low. If that looks good, I'd check the 2 connectors at the transmission - 1 for the Multifunction switch and 1 for the internal solenoids/sensors. Make sure there is no corrosion on the terminals. Any codes in the ECU?
 
  #3  
Old 02-11-2011, 01:53 PM
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No codes in the ECU and no flooding.What would be the symptoms of TCU problems?
Thank you
 
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