2002 Audi A4 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2002 Audi A4 Quattro

No_car_image
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
Get a Repair Estimate For Your 2002 Audi A4 Quattro
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more

2002 Audi A4 Quattro 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 illuminatesT
  • 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. 

Fluid Leak From Transmission Output Shaft Seal

A fluid leak may develop from the propeller shaft seal on the rear of the transmission. Our technicians tell us that replacing the seal will commonly correct this concern.

Various Probelms Caused by Clogged Plenum Tray Drain

Clogged drains can allow rainwater to accumulate in the plenum tray (at the base of the windshield). The water may leak into the vehicle's interior, brake booster, or electrical components, which can lead to major problems. Our technicians recommend keeping the tray clear of leaves, pine needles, and other debris.

See More Problems (17)

2002 Audi A4 Quattro Questions

Oil coolant gasket (1 answer)

How to replace it

Fault code P0420 Common Fix- replace oxygen sensor (1 answer)

Fault code P0420 is common in Audi's. And it refers to an inefficient catalytic converter. However, I have found that the fix for this fault code is seldom the catalyst itself but rather replacing the oxygen sensor.
I was hoping that someone could expand a bit on what they have read or seen ...

transmission gear box and water pump (1 answer)

a mechanic said we could have problems with the transmission and the water pump it seems some of gears are not working correctly and advise us not to drive the car but when we pick up the car from him it seems ok so we are confused can you advise us what to do and if those are the problems ho...

See More Questions (38)

2002 Audi A4 Quattro Reviews

Rated
based on 2 customer reviews
Complete piece of crap. Bought the car brand new and it had electrical problems when it came off the lot. Spent the first 6 weeks we owned it (literally) at the dealership trying to fix it. Has had the radio replaced 3 times. Developed an oil leak at 40,000 miles. Torque converter and catalytic converter needed replacing at 70K miles. And NOTHING on this car is cheap to fix. Latest issue cost $...
had my car since brand new on january 2002. 2002/2003/2004 were covered under warranty. My repair bills for 2005- $2592.00, 2006- $3906.00, 2007 $2660.00, 2008 $1557.00, 2009 $2407.00 TOTAL $ 13106.00/ 246492 kms = 5.3 cents per KM This is double the recommended average br CAA Canada. Also my reapirs woudl have been much higher if I let AUDI dealer do this.

See More Reviews (2)