Audi A4 A6 Multitronic auto transmission ECU

Audi A4 A6 Multitronic fault

Audi A4 A6 Multitronic gearbox transmission ECU (“PRNDS” light fault)


This Audi A4 A6 Multitronic Transmission ECU is very common for causing failure for all Audi 2001 - 2007 vehicles with Multitronic transmission/gearbox.


When this gearbox ECU becomes faulty, the P R N D S lights will flash on the display instead of just the “D” icon when driving. This will generally be your first indication that there is something wrong. As soon as the P R N D S lights begin flashing the vehicle will usually be forced into fail-safe mode and lose power.

Other common symptoms include a complete loss of reverse and drive, with the transmission not being able to move from the P position.

Scanning the vehicle with diagnostic equipment will often reveal a host of fault codes relating to faulty range, output and input sensors along with codes for solenoid and pressure control valve malfunction.


The Audi main dealership remedy to this Multitronic issue is to purchase a new transmission ECU from manufacturer: at a huge expense.

Our solution is far more cost-effective: we test and rebuild your own Multitronic transmission ECU, at a fraction of the cost of the main dealer unit and provide a Lifetime warranty. After the rebuild this Audi gearbox ECU will just plug straight back into the gearbox with no need for programming afterwards.

Common faults:

  • P R N D S light flashing on dashboard
  • Gearbox in fail-safe mode / limp home mode
  • Loss of reverse gear
  • Complete loss of drive


Common fault codes:

  • P0706 17090 – transmission range sensor (F125)
  • P1757 18165 – supply voltage open circuit
  • P1793 18201 – transmission output speed sensor 2 (G196)
  • P1717 – transmission input speed sensor no signal
  • P0750 – shift solenoid 1 (N88) malfunction
  • P0753 – shift solenoid 1 (N88) circuit failure
  • P1813 – pressure control valve 1 (N215) electrical malfunction
  • P1818 – pressure control valve 2 (N216) electrical malfunction


Part Numbers

This is just a small list of common part numbers, if you do not see your part number here then please see below as we cover the entire range.


Test and rebuild:

Each Audi A4/A6 Multitronic transmission ECU is fully tested on our bespoke Hardware-In-the-Loop test rigs, simulating real-world load and driving conditions we test at and beyond standard OEM parameters. Once all faults have been identified our skilled technicians will move onto the rebuild stage, replacing faulty components with higher rated than standard, after this further quality control tests are performed.



We retain all the original programming from your transmission ECU during test and rebuild. So, no need for any programming or coding work once you receive it back



We supply these Auto gearbox ECU’s for both main dealers and specialists all over the world so you can be assured of our very high standard of work. Due to our very strict Lifetime warranty standards our work defect rate is below 0.6% on all our rebuilds.



We supply all units with a Lifetime unlimited mileage warranty as standard.


How do I get my unit rebuilt?

Pay for the rebuild here: select your vehicle from below, choose your part number and click Get Yours Rebuilt:

Audi A4 transmission ECU's

Audi A6 transmission ECU's

Print the payment/booking confirmation email.

Package the Audi transmission ECU 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 Multitronic ECU 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 transmission ECU 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 transmission ECU and call you to advise on the outcome of testing, if your unit 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 gearbox ECU and return it to you with an unlimited mileage warranty.


If you require further information regarding this Audi A4/A6 Multitronic gearbox transmission ECU then please contact us.

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Comments on "Audi A4 A6 Multitronic auto transmission ECU"
Arno Teigseth says: 11/7/2019 11:08:25 PM
1) how do I know whether my box is Multitronic or Tiptronic? 2) my box does not show PNDRS, but gearing is very jumpy between 1300 and 1600rpm aprox. Could this be ecu too?
ECU Admin says: 12/7/2019 10:22:35 AM
Hi Arno, to know what system you have you will need to read the control unit ID via OBD II diagnostic using professional level diagnostic equipment, this will give you the part number from your gearbox control unit and the system type. You can then use the search function at the top of this page to search for your part number, this will give you information about the common fault, price and shipping information.
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