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 main 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 in 2-3 working days, at a fraction of the cost of a replacement 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
  • P0722 - Transmission Output Speed Sensor No Signal (G195)
  • 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 0.49% 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"
Amr says: 17/07/2020 23:42:05
Hi i have problem with my multitronic gearbox PRNDS flashing last 1 mounth.3 fault codes can see 18201 2(G196) P1793000 no signal 17137 Shift solenoid N88 P0753-007 circuit Failure 17134 Shift solenoid 1(N88) P0750 000 Malfunction I,am interested how much money is this service thank,s
ECU Admin says: 21/07/2020 10:05:33
Hi Amr, for prices and shipping information please select your vehicle or part number above.
Luke says: 06/03/2020 22:59:37
Hi, what's your turn around say from sending to you to receiving it back, I'm going to retrieve my number and get one ordered just need to know a timescale
ECU Admin says: 10/03/2020 10:01:20
Hi Luke, our turnaround time is 2-3 working days
Scott Leadbetter says: 03/02/2020 07:09:45
Hi I have 07 A4 2.0tdi sline multitronic.PRNDS is lit up but not flashing on dash.I went down a hill in N then clicked into D at the junction at bottom of hill. I heard a metallic Clunk just the one and at that moment drive was gone. I have dtc codes relating to input and output sensors having no signal and after a reset on diagnostic the PRNDS will tell me which gear is selected but only once then it just lights up. Front wheels dont lock in P. Is this an ECU or mechanical fault. Please help.
ECU Admin says: 03/02/2020 10:50:01
Hi Scott, this sounds like a potential CVT ECU failure due to the fault codes for input and output sensors. Sending your transmission ECU for test and rebuild couldn’t be easier, just choose your part number from the above list or from here:
samantha says: 13/12/2019 08:41:37
hi i am currently having this issue with my audi could you provide more detail and pricing please
ECU Admin says: 16/12/2019 16:39:30
Hi Samantha, for rebuild and shipping costs please select your part number above.
Cedric says: 21/11/2019 20:07:16
Hi i got these codes on my transmission.. P1743 clutch slip:signal too much P1818 press ctrl valve2 Electrical error in circuit P1857 load signal:error message from engine contr.
ECU Admin says: 25/11/2019 11:47:11
Hi Cedric, the fault code P1818 – pressure control valve 2 (N216) electrical malfunction is common for a faulty Multitronic CVT transmission ECU. However you may have further issues on the vehicle causing both ‘signal’ fault codes to be stored. For prices and shipping information regarding the Multitronic rebuild please select your part number from the following list:
David Pickford says: 01/10/2019 02:55:50
Hi, l have a 2007 build A4 sline 1.8T with the 7 speed auto. On occassions the PRNDS lights start flashing, on some occasions I can't select reverse but can always get Drive and can never use the "manual" mode. The car does not go into limp mode. Any thoughts on possible issues? Regards Dave
ECU Admin says: 01/10/2019 09:37:08
Hi David, does the vehicle log the same set of fault codes each time it fails? We can help with your Audi A4 transmission ECU just select your part number from the following list:
rishi says: 13/09/2019 19:43:16
audi a6 driving in limp mode only pls assist
ECU Admin says: 16/09/2019 10:18:52
Hi Rishi, is this the only symptom at the moment? It is important to scan the vehicle for stored and current fault codes, once you have these you can compare against the list above. If you would like us to look into your fault codes when you have them then please do not hesitate to contact us:
Nana Kojo says: 09/09/2019 11:54:48
Hi I experience the ESP fault/Parking break fault coming up on My Audi A6 2007, 2.0TDI then the gear get stuck in. I don't know the part number and dont know how to take the TCM out. Any help?
ECU Admin says: 09/09/2019 12:18:16
Hi Nana, the part number is written on the unit, you can also retrieve this when scanning the vehicle for your fault codes (will be in the system information section for the transmission ECU). If you contact us via email or phone we can forward you some removal/fitting instructions:
colin says: 30/08/2019 18:58:09
Hi mine is a cvt multitronic a4 1.8t 2004 it sometimes jumps from D to S and sometimes doesn't engage in reverse. If it is acting like this and I select neutral then the prnds will flash red. could this be my solution.
ECU Admin says: 02/09/2019 10:04:48
Hi Colin, sounds like you may have a faulty transmission ECU. We can test your unit and repair if necessary. Please select your part number above for prices and shipping information or check our full Audi A4 transmission ECU list here:
Arno Teigseth says: 11/07/2019 23:08:25
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: 12/07/2019 10:22:35
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.
Cedric says: 27/09/2019 07:57:28
Hey . My Audi b7 multitronic when i select D it only drives in 1st gear it doesn't continue to change . Can it be the ecu faulty ? .Please help
ECU Admin says: 30/09/2019 16:06:52
Hi Cedric, you may well have a faulty transmission ECU. It is important to scan your vehicle for fault codes, once you have these we can help determine the root cause of your issues, just contact us with the fault code information:
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