2001 Audi A6 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2001 Audi A6
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2001 Audi A6 ProblemsNo Start after Refueling and Popping Noise from Trunk
Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and releasing to retest the system when it finds a fault. The sequence of faults identifying this issue are as follows:
- Succession of loud pops from rear of vehicle
- Pops go away, and fuel economy decreases
- Check engine light illuminates
- OBD trouble code P2404 and/or P0441 is stored
- Engine will not start after refueling (must crank for over 30 seconds)
- Vibration when slowing to a stop
The cause is a valve which is mounted on the front of the intake manifold, commonly called the N80 valve, or EVAP system purge valve. The valve is designed to open under specific circumstances, but a worn valve will remain open at all times, preventing the pressurization of the fuel tank.
Correction of the issue is to replace the N80 valve with the latest revision.
2001 Audi A6 Questionso2 sensor faults (1 answer)
had converts 2 ea. replaced all 4 o2 sensors replaced w/Audi ones 3 times still have o2 sensor faults that , saying too high resistance and short to b+ never changed . the Audi garage can't figure it out so can anyone help thanks mike
Oil leaking at the bottom
engine may have seized up
2001 Audi A6 RecallsPotential Fuel Leak From Crack at Rollover Valve
The aging of the plastic material in the fuel tank rollover valve, combined with stress from the aluminum ventilation line attached to it, may lead to cracking of the connection nipple. The cracked nipple could leak fuel, increasing the risk of a fire. Dealers will reinforce the nipple on the rollover valve or repair the cracking as necessary. This recall is expected to begin during June 2011. The Audi recall number is 20L8/JY.