Question about 2004 Audi A4

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2004 Audi A4 3L won't start

My 2004 Audi A4 3L died while driving on the freeway. Battery ok, fuel pump fuse ok, plenty of fuel.

I'm getting two error codes, P0130 and P0150 but, I have no idea what they mean.

Does anyone know the location of the fuel pump relay switch... I thought I would start by replacing the relay switch or fuel pump.

Any thoughts?

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  • Flyingspur Aug 19, 2008

    I just realized that I cannot hear the fuel pump "priming" when I turn the key on.

    I disconnected the fuel line, cranked the engine but, no fuel at the "disconnect".

    The car has 62,000 miles and has been serviced (up to 50,000 miles) by an Audi dealership only. I use only super octane fuel.

  • Anonymous Oct 13, 2008

    hello i have 2001 a4 1.8t my car will not start on me the battery is good , cranking sounds good , fuel is full but just wont start ..the tow truck told me it might be my fuel pump...Help me please

  • michaelboyd Nov 28, 2008

    I have the same problem. Car starved of fuel on the motorway and died. AA mechanic said likely to be the fuel pump but I agree with my local mechanic that said it is really unlikely to be the fuel pump unless you can hear it whining away before hand. His advice ... check fuse (fuse 28 - 20amp - done OK), check you have a decent 11-12+V at the left hand terminal of the fuse (done yes ok 11.27V), check the 3 relays mounted behind about the fuse box as they are known to work loose due to their orientation (checked OK - done). This is where my info runs out .... next steps are to determine which relay actually drives the fuel pump, remove and map out which pin does what and using a wire with a 20amp in line fuse try and pull in the fuel pump manually to 12V (just for a second) this will determine whether the issue is actually the fuel pump or what triggers the relay to the fuel pump. Good luck .. if anyone works out which of the 3 relays it is then please post as I can't find out! Good luck ....

  • Anonymous Jan 09, 2009

    hey i have a 2004 a4 1.8t and it started fine this morning and than after running for about 10-15 min died.... and wont start again cranks good tank is full but it wont go...........

  • Anonymous Feb 05, 2009

    how do you remove fuel pump on a 1996 audi a 4 quattro 2.8?

  • Anonymous Mar 15, 2014

    2004 1.8t AUDI



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P0130 is 02 sensor bank 1 and P0150 is 02 sensor bank 2.

Posted on Jan 20, 2009

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The problem is not the relay switch the problem to me sounds like the fuel filter needs to be replaced so i wouldnt be messing with the relay switch because the relay switch would be harder to replace.

Posted on Aug 19, 2008

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Relays rarely fail on Audis. Are you positive the vehicle has fuel? I have seen many fault dash gauge readings, indicating full constantly. Also the sender unit on the fuel pump can give faulty readings, causing the same problem. If your not 100% sure its got fuel it may be worth just putting in 5 litres in and give it a go. If your sure it has, its back to basics, air, fuel and spark.

Posted on Jan 21, 2009

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