2003 Audi A6 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Audi A6

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2003 Audi A6 Problems

No 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. 

Oil leaks from camshaft drive pulleys and variable valve timing hydraulics
Oil leaks from the camshaft drive pulleys and variable valve timing hydraulics are common. If the variable valve timing hydraulics is leaking, the Check Engine Light may illuminate from inaccurate valve timing.
Check Engine Light Due to Faulty Torque Converter

A problem with the torque converter can cause the Check Engine Light to illuminate.

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2003 Audi A6 Questions

Why I have to crank 3 times always to start ? (2 answers)

In the morning I have to crank 3 times always to start , only if I stop and crank again in not more than 5 minutes it will start on first crank ,if I make stop over 5 minutes I have to crank again 3 times (only sometimes 2 times). Fuel pump and fuel filter replaced but it is still doing the sam...

Why do my car have lack of power on the take off its putting but dont have a mis (1 answer)

Engine light on po491 & po492 but not to worried about tht if it dont have nothing to do with the issue at hand im not getting any misfire codes so why stall...please help..v8 4.2 03 audi

The Antii-Slip Regulation light came on and it lost power. (1 answer)

I turned it of, but when I turned the car back on it started checking and when I put it on drive it started jocking. What could it be?

Thanks.

TJ

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2003 Audi A6 Recalls

Potential 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.

Recall 07V375000
ON CERTAIN VEHICLES EQUIPPED WITH 1.8L TURBO, 2.8L V6, OR 3.0L ENGINES, A CHANGE IN THE ELECTRICAL MOTOR COMPONENTS IN THE FUEL PUMP CAN LEAD TO AN INOPERATIVE FUEL PUMP AND, ULTIMATELY, STOPPAGE OF FUEL SUPPLY TO THE ENGINE CAUSING IT TO STALL.
Recall 06V198000
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH HALOGEN LOW BEAM HEADLIGHTS, CERTAIN CONNECTOR PINS IN THE HEADLIGHT SWITCH CONNECTOR COME INTO CONTACT WITH EACH OTHER CAUSING A SHORT CIRCUIT. NOTE: VEHICLES WITH XENON LOW BEAM HEADLIGHTS ARE NOT AFFECTED BECAUSE THE CIRCUIT IN THESE VEHICLES CONT...

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2003 Audi A6 Reviews

Rated
based on 1 customer reviews
Overall good reliability. At 5 yrs, some small parts of the interior start to deteriorate like small knob on sun visor, 12V lighter receptacle has no power, ashtray cover get loose. Purchased: July '07 History: 2nd owner Like: Manual transmission when power needed for highway passing. Dislike: Sluggish acceleration when on automatic transmission and turbo threshold not yet reached.

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