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1996 A6 Quattro No Overdive / ABS Issues

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

1996 A6 Quattro No Overdive / ABS Issues

Old 01-31-2017, 05:19 PM
1st Gear
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Join Date: Jan 2017
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Default 1996 A6 Quattro No Overdive / ABS Issues

I recently purchased a 1996 A6 Quattro, and have just noticed that overdrive does not seem to be working (I don't do much highway driving). The transmission shifts well through gears 1-3, and the shift position indicator on the dash works properly. Doing a scan with VCDS-lite shows no fault codes on the transmission module.

I am, however getting other codes -

18014 - Rough Road/Engine Torque Signal from ABS: Electrical Malfunction

from the ECU, and

00301 - ABS Return Flow Pump (V39)

from the ABS module. The ABS module was previously not working at all, and ABS and BRAKE lights were on as soon as the ignition was turned on. I cleaned and reseated the connector, and now the ABS and BRAKE lights come on steady and stay on, but not until the car starts moving.

Is it possible that the overdrive issue is related to the ABS issue? Where would be the best place to start troubleshooting? This is the first Audi I have owned, so I welcome any suggestions.


On an unrelated note (I think), the radio does not turn off when remove the key, though all other accessories do turn off.
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