2001 Audi A6 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2001 Audi A6 Quattro

2001 Audi A6 Quattro Problems

Check Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault

Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.

Overheating Due to Failing Thermostat

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.

ABS Light Due to ABS Control Module Failure

The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.

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2001 Audi A6 Quattro Questions

How can you verify a suspected timing belt problem? (1 answer)

the Car starts briefly,then shuts off. Will there be a check engine light or something similar?

My flasher switch is buzzing. It sips when you turn flashers on. No blinkers.why (1 answer)

I replaced the flasher switch and it still makes a buzzing noise. And i still have no blinkers.

The oil temp gauge isn't working. What does this mean? (1 answer)

Is this why my check oil light is on?

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2001 Audi A6 Quattro Reviews

2001 Audi report I bought this car from my next door neighbor who moved away with his daughter to a mid western state & I bet he's kick’n his donkey since he sold me this MACHINE. I replaced both cats at 67K (covered 100% by Audi). The breaks normal W & T, but now 3 of the 4 ball joints on the front passenger side need replacing now @ 91K. I changed the spark plugs & now back to premium growli...
At 54k the Quattro needed to be completely replaced (had to fight Audi to get some help with the $12K bill). Now with 130k, the Quattro is again showing signs of a problem. Local shop seems at a loss for what to do next. Engine, suspension & steering, interior are all AWESOME. Still tight as new and not a single squeak. Brakes are overly dusty and exhaust needed replacing at about 120k.

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