Saab 9-3 Engine ECU - Common fault - Engine cuts out when hot

Saab 9-3 ECU fault

This Saab 9-3 engine ECU is a common failure that causes the engine management light to come on followed by the engine cutting out when hot, the car will then fail to restart until the engine cools down again.

The ECU fault will usually start out as intermittent but will become more permanent with time.

How long you need to let the engine cool down before it will restart can range from 20 mins up to 2 hours, depending on how bad the fault is within the ECU. A diagnostics check will usually return a fault code of P0601 – Internal Control Module Malfunction, if you have this fault code stored then your Saab 9-3 engine ECU is most definitely faulty.


We are able to fully test and rebuild your own unit with an unlimited mileage lifetime warranty.


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Common Failure symptoms:

  • Engine management light illuminated
  • Engine cuts out when hot and will not restart


Common fault codes:

  • P0601 – Internal Control Module Malfunction


Part Numbers - Shop Now


Test and rebuild:

We fully test your ECU on our HIL (Hardware In-the-Loop) simulator, this replicates the exact driving conditions of your vehicle and loads of your engine. Once the fault is identified we then move onto the remanufacturing stage, during this stage we replace all failed components with higher rated versions and rework the entire PCB (Printed Circuit Board) to ensure the failure does not occur again. Following the rebuild we then re-test your ECU to ensure the fault has been rectified before returning your ECU fully rebuilt with an unlimited mileage lifetime warranty.



We retain all the original immobiliser programming and engine configuration data during the rebuild process, so there is no need to reprogram your ECU once it is refitted to the vehicle. It is a simple case of plugging it back in and driving away.



Our work processes are second to none, we test and rebuild ECU's for Saab main dealers and specialist independent workshops all over the globe, so you can be assured of our very high standard of work.



Lifetime unlimited mileage*


How do I get my unit rebuilt?

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

Print the payment/booking confirmation email.

Package the Saab 9-3 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 Saab 9-3 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 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 Saab engine ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Saab 9-3 engine ECU, then please contact us.

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Comments on "Saab 9-3 Engine ECU - Common fault - Engine cuts out when hot"
Andrei Popa says: 29/01/2024 09:13:27
Hello! I have a 2003 Saab 93 Aero 2.0T 210Hp. When I start the engine cold, the revs go even up to 2700 rpm and after that, sometimes dropping and the engine dies. After I manage to start it, everything works fine until the engine reaches its normal operating temperature. After that, it starts to idle unevenly and the check engine light starts blinking (the error says "random/multiple misfires"). Is that throttle body or ECU? Which one should I send? Thank you
ECU Admin says: 29/01/2024 13:08:42
Hi Andrei, it's more likely to be the ECU that is at fault
Niall MacLeod says: 27/06/2023 17:01:02
Hi there, I'm chasing a misfire on cylinders 1 and 5 on my saab turbo x. I'm initially going to replace 2 coil packs, but if thos doesn't work I'm guessing I need my ecu looking at. I'm not seeing a 2.8 v6 option on your site. Cheers, Niall
ECU Admin says: 28/06/2023 09:26:04
Hi Niall, drop us an email with your ECU part number and we can look into that for you. contact us
Frode Doermaenen says: 30/04/2023 16:27:25
Hello, do you ship back to Norway? ECU 55565020 with P0606 fault. 2008 1,8t Biopower Best regards Frode
ECU Admin says: 09/05/2023 13:39:18
Hi Frode, we can certainly help you out, we offer worldwide shipping.
keith taylor says: 26/11/2022 17:03:44
I have a different situation in that the car does not fire this is from cold. I will do the reset method to make it start which initially works perfectly no it does not. I've now reached a point whereby I can drive I can stop and then it won't restart so the situation does not seem to be from hot Moreso from cold. would this be ECU? I cannot rely on the car to start when i need it
ECU Admin says: 28/11/2022 09:50:01
Hi Keith, send us over your ECU part number and diagnostic results to contact us and we can take a look into that for you
Blake says: 10/10/2022 23:49:45
ECU # 55565020 2007 Saab 9-3 2.0 L Turbo Fault codes: P0245, P0201, P0202, P0203, P0204 Only faults when hot. Works fine until ECU assembly/case surface temperature reaches roughly 130 deg F. You can test okay?
ECU Admin says: 11/10/2022 09:44:41
David White says: 10/10/2022 17:24:35
Have a 2011 saab 9-3 ecm Part # 55567225 which has all 4 injector codes P0201 - 202 - 203 - 204 and p0245. When I had BBA reman. doing my ECMs they required that I replace all 4 injectors or they would not warranty. Can you please let me know what you know about this , and can you repair this unit ? My experience is that these codes are repairable and that all other codes (especially Internal fault codes are not ) Thank You
ECU Admin says: 11/10/2022 09:52:26
Hi David, we can certainly help with that, although we wouldn’t know regarding other companies warranty terms, we’ll give you an unlimited mile lifetime warranty.
Harry Maroulakos says: 25/05/2022 17:03:01
If l choose to buy a New ecm, will it be plug and play or do l need to send old unit to you for cloning
ECU Admin says: 31/05/2022 09:56:39
Hi, these ECU's are coded on installation or via code swap from the original ECU
Víctor Cisneros says: 23/02/2021 21:32:23
Hi, y have a Saab 9-3 2004,2.0T I have a mechanic's shop in México, I've read all they info, what si the total cost of rebuilding My ECM?
ECU Admin says: 24/02/2021 09:32:30
Hi Victor, for prices and shipping information please select your ECU from the following list:
Christopher Robinson says: 10/07/2020 02:44:54
High I have a 03 93 2.0t codes p0245 p0201 p0202 p0203 p0204. Diagnosed a faulty ecm..... ecm part number 55352688. I need an ecm can you help?
ECU Admin says: 10/07/2020 09:39:46
Hi Christopher, we offer test and rebuild on that part number. Please see the following link:
Hugh Baun says: 01/06/2020 21:39:06
Looking for an ecm / edu unit for my 2006 Saab 93 2.0T Sport Combi 55353231 ecm ecu
ECU Admin says: 02/06/2020 09:15:18
Michelle Hanselmann says: 27/11/2019 06:16:02
What is the cost and turnaround time to do the repair
ECU Admin says: 27/11/2019 10:03:08
Hi Michelle, for prices, turn-around and shipping information please select your engine ECU part number above or from the following list:
Mr Chris Skinner says: 20/09/2019 19:05:33
Good day, We have an employee who has the Saab 93, management light on, stoppped, took 20 minutes to cool down and then would restart, how much is the whole collect repair and deliver back. regards Chris
ECU Admin says: 24/09/2019 10:33:24
Hi Chris, yes this sounds like you have a faulty engine ECU. We can help with that, for prices and shipping information simply select your part number above or from the Saab 9-3 engine management ECU list:
Niko says: 20/09/2019 06:40:30
Tengo un saab 93 2008 pero tengo un problema que el carro le oprimo el acelerador y aveces no me responde.lo lleve a un centro de diacnostico y me dicen que cuando hace esa falla la ecu..pierde señal con el escaner .por eso pienzo que pudiera ser la que esta fallando...podria ser eso????
ECU Admin says: 24/09/2019 10:36:55
Hi Niko, internal component failure of your engine ECU may be the cause of the intermittent communications issues. This can be very common issue which we do test and rebuild for.
Dan says: 16/09/2019 18:07:03
Where is the least expensive place to get an ECM for a 2003 Saab 9-3 tested and reprogrammed
ECU Admin says: 17/09/2019 17:27:19
Hi Dan, we can help you with that. Just select your part number from the following link for prices:
Mike says: 20/08/2019 01:24:47
Hi my 06 saab 93 2.0t ecm is bad, wanted to get a price on the ecm rebuild.
ECU Admin says: 27/08/2019 11:24:39
Hi Mike, we can help with that for you. Please select you part number above for prices and shipping information or find you part number here:
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