Audi A4 / A6 2.5 TDI V6

Bosch VP44 Diesel pump fitted to Audi A4 & A6 vehicles

This is a very common problem for all Audi A4 and A6 vehicles with the 2.5 TDI V6 engine built between 1997 and 2003.

The mechanical side of the pump is usually very reliable and gives very few problems, nearly all of the faults we see are caused by the Electronic Diesel Control unit (EDC) located on the top of the diesel pump. With internal malfunction of the EDC there will be no fuel pressure at the injectors.

In order to resolve this issue you may seek to purchase a replacement diesel pump with EDC. Because the EDC is not available separately from the diesel pump this makes replacement very expensive and time consuming. But we can save you the hassle!

We are now repairing customers own Bosch VP44 diesel pump control units and providing a Lifetime warranty as standard.

Please note that we only test the EDC on top of the pump, we cannot test the mechanical part of the pump.

These Bosch VP44 diesel pumps can be difficult and very time consuming to remove and reinstall to the vehicle, we recommend any removal/reinstall be performed by a trained technician ideally with previous experience of these pumps. Attempting to run these pumps when they are drained of fuel can seriously damage the mechanical side of the pump.

Common Failure symptoms:

• Engine cut out
• No start
• No fuel pressure at injectors

Common fault codes:

• 89 – Injection begin error
• 01318 – Fuel pump control unit (J399), signal outside tolerance
• 01268 – Quantity adjuster fault

Affected Vehicles:

• Audi A4
• Audi A6

Common failing part numbers:

• 0 281 010 837 Audi A4, Audi A6
• 0 281 010 889 Audi A4, Audi A6
• 0 281 010 479 Audi A4, Audi A6
• 0 281 001 827 Audi A4
• 0 281 001 371 Audi A4, Audi A6
• 0 281 010 888 Audi A6

Test and rebuild:

By testing these VP44 diesel pump EDCs on our HIL (Hardware-In-the-Loop) rigs under real-world load and driving conditions, both before and after rebuild, we can ensure that the rebuilt EDC will not fail again.

Programming:

All coding is retained during test and rebuild, there is no need for recoding once you receive it back from ourselves.

Quality:

We have been rebuilding these Bosch VP44 EDC units for dealerships, specialists and owners many years so you can be assured of our commitment to quality.

Warranty:

Lifetime unlimited mileage*

How do I get my unit rebuilt?

To pay for the rebuild select your model from the part numbers above and click: Get yours rebuilt

Print the payment/booking confirmation email.

Package the VP44 EDC inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received we will test, rebuild and return your Bosch VP44 diesel pump EDC with an unlimited mileage lifetime warranty. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping)

What if I don’t want to pay up front?

This is not a problem, if you prefer this option then follow the following steps:

Fill in and submit this test form.

Print the booking confirmation email.

Package the Bosch VP44 diesel pump EDC inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received, we will test your VP44 EDC and call you to advise on the outcome of testing, if your EDC is faulty and you choose to go ahead with the rebuild then we will take payment over the phone using a debit/credit card.

We will then rebuild your diesel pump EDC and return it to you with an unlimited mileage warranty.

If you require further information regarding this Bosch VP44 diesel pump EDC, then please contact us.