Mini Cooper not starting caused by engine ECU problem

Mini Cooper no start ECU

Common Mini Cooper engine ECU problems will result in the vehicle not being able to start.


Running symptoms may begin with engine misfire and the vehicle being forced into limp mode. Internal failure of the ECU will cause the engine management light to become illuminated and will store a multitude of fault codes for monitoring power supplies, sensor faults and even one for ‘internal failure’.


Ultimately this engine ECU will end up preventing the vehicle from starting and at this point of malfunction direct communications to the engine management system will not be possible. This engine ECU has a design flaw that causes these symptoms, normally you would need to replace the ECU with an expensive new unit from the main dealers and then pay for coding of the ECU to the vehicle.


Rather than getting an expensive replacement new unit from main dealer or the manufacturer, we offer a Mini Cooper ECU repair which will take 3-5 working days. By choosing this method you will not have to program the ECU either and we will provide an unlimited mile lifetime warranty.



Common Failure symptoms:

  • No start
  • No communication with DME / engine ECU
  • Misfire
  • Limp mode


Common fault codes:

  • 2BD3 – Monitoring Power Supply 2 CY230 / Power Supply For Sensor 2 Power Supply Not Within Range
  • 2BD4 – Monitoring Power Supply 3 CY320 / Power Supply For Sensor 3 Power Supply Not Within Range
  • 2BD0 – DME Internal Failure
  • 2B0B - Throttle Valve Position Sensor 1/2 Faulty
  • 2B02 - Throttle Valve Position Sensor 1 Faulty
  • 2B06 - Throttle Valve Position Sensor 2 Faulty
  • 2848 - Fuel Pressure Sensor Faulty
  • P0641 – Sensor A Open Circuit


(Can’t see your ECU part number? Don’t worry we cover the full range of Mini Cooper, Clubman, JCW and One engine ECU’s – click your model to find your ECU)


Test and rebuild:

Every Mini engine ECU is comprehensively tested on our bespoke Hardware In-the-Loop testing rigs under real-world load and driving conditions. Once all the faults have been identified with the ECU our technicians will rebuild the unit using higher rated components than OEM, and then retest to ensure the ECU meets and exceeds manufacturer specifications.



All coding is retained – no need for an expensive trip to main dealer.



We have been the number one choice for testing and rebuilding ECU’s for main dealerships and specialists for many years. Our strict quality control encompasses every stage of the test and rebuild process in order for us to provide our unlimited mile lifetime warranty.



Lifetime unlimited mileage*


How do I get my unit rebuilt?

To pay for the rebuild select your part number above and then click: Get yours rebuilt

Print the payment/booking confirmation email.

Package the Mini Cooper engine 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 engine 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 Mini engine 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 Cooper engine 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 ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Mini Cooper engine ECU then please contact us.

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Comments on "Mini Cooper not starting caused by engine ECU problem"
Jay Bradley says: 26/4/2022 10:07:56 PM
I have two codes - 2A6C - internal fault and 2A99 - oxygen sensor lines, could these be caused by my ecu?
ECU Admin says: 27/4/2022 10:08:19 AM
Hi, we've seen this issue before and it is often caused by a faulty sensor or wiring issue rather than the ECU.
Denny Wong Chee Keong says: 9/8/2021 8:38:30 AM
i have a code show up in my handheld obd2. can you tell me what is this code meaning to my car? i can start it and run well. The code is ::2BC4 MENTION:DRIVER CJ945
ECU Admin says: 16/8/2021 11:37:36 AM
Hi Denny, this code is usually stored due to a fault with the engine management ECU (ECU internal fault) which would need to be repaired.
Caleb says: 18/5/2021 6:59:44 PM
Hi, I'm considering buying a 2005 Mini Cooper S Convertible. The owner is telling me that the ECU is bad. If I purchase, could I send it to you for testing? I don't see 2005 models listed on this webpage.
ECU Admin says: 19/5/2021 9:34:03 AM
Hi Caleb, we can still help with that for you. Please see the following for a full range of Cooper ECU’s
steve says: 6/6/2020 1:42:34 AM
If my ecu is sent to you do we have to send the round key / security with it to be linked programmed together ???. Thanks
ECU Admin says: 8/6/2020 9:29:00 AM
Hi Steve, we will only require the ECU. Our rebuild service retains all original programming on the ECU, so it will be plug and play when you receive it back.
Maurice Terry says: 3/6/2020 12:48:28 AM
My 2008 Mini Cooper S (R56) will not start and I have a ECU failure code. Would like to have it tested and rebuilt. Thank you for the support with this matter! Maurice
ECU Admin says: 3/6/2020 9:12:04 AM
Hi Maurice, we can help with that. To get started select your part number from the following list:
chris remick says: 18/1/2020 10:05:18 PM
I suspect my ecu is bad can you please test it.
ECU Admin says: 20/1/2020 10:19:25 AM
Hi Chris, ECU testing is one of the things we do best. We test control units using bespoke HIL (Hardware In-the-loop) test-rigs, these rigs are designed to simulate all running conditions on the vehicle and use real world loads.
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