Engine ECU Test and Repair Services

    1. What Is An ECU?
    2. What Does The ECU Do?
    3. What Is ECU Coding?
    4. What We Do
    5. Common Faults
    6. Technical Fault Terms
    7. ECU Testing
    8. Non-Repairable Unit?
    9. Repair Or Exchange?
    10. Prices
    11. Warranty
    12. Ready To Send Us Your Unit?

What Is An ECU?

Each car is installed with several ECU units. ECU stands for “Engine Control Unit”
there is an ECU for your engine management, one for your dashboard/lights,
one for your gearbox and one for your hood if you have a convertible vehicle and so on.
The engine ECU’s are also known as ECM (Engine Control Module).

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What Does The ECU Do?

An ECU (Engine Control Unit) also known as an ECM (Engine control module) is responsible
for all the electronic signals passed back and forward to the vehicle. Without an ECU,
your engine would not even start.

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What Is ECU Coding?

Recently, manufacturers have begun coding all ecu’s to the vehicles they are installed on,
this is an act to cut down on crime as many people realised how expensive these units can
be and began breaking into vehicles. An ECU from main dealer can typically cost around

We have been in the business since 1972 and are able to repair the ecu’s from all
types of vehicles.

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What We Do

As fully qualified ECU repair specialists we are capable of carrying out a wide range of
ECU repairs following an initial ECU soak testing which will help to identify the cause
of the problem and pinpoint it exactly.

In many cases a simple flash reset could be all that is required to get your ECU back into
working order but if your electronic control unit needs to be exchanged or replaced then
we are able to offer some great deals on new ones from a range of manufacturers including
Civic, Honda, Ford and Nissan ECU units and we are also proud to announce that we’ve got
some fantastic cash saving offers on the latest range of brand new BMW and VAUXHALL ECU

ECU’s are rarely manufactured by the car manufacturers. In most cases the manufacturer of
your ecu unit will be one of the following:

To find out if we can repair your own unit, contact us today.
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Common Faults – All of which are repairable

• water damage

• missfire

• ecu spiking (caused from jump-start)

• slow to start & sluggish drive

• excess fuel consumption

• engine management light on

• engine turning off on it’s own

• immobolisor problems

• ecu decode required
And Many More..!

If your ecu fault is not listed here, we may still be able to repair it.

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Technical Fault Terms

• Attempted Jump Start Caused Non-Starter – SPIKED

• Won’t rev over 2,500RPM – LIMP MODE

• Engine Not Idling, Revs go up & down – HUNTING

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ECU Testing

Checked your wiring loom and all seems fine?

Not sure wether or not it is the ecu playing up?

Request us to “test” your ecu unit, if there’s no fault found then we only charge the
standard test fee. If your unit is found to be faulty then we’ll give you the option of
having the unit repaired – in this case, we’d wave the test fee and charge only the repair

Worried the fault is intermittant and may not show up?

We test all units extensively up to 24-48 hours to be absolutely sure of the ECU units
condition before allowing it to leave the premises.

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Non-Repairable Unit?

On a day-to-day basis, customers are being told by their local garages and main dealers
that their ecu is “non-repairable” and need replacing. Replacing an ECU can cost in the
excess of £1000+ yet we are able to repair old units even if it means changing the
entire circuitry and save you £100’s.

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Repair Or Exchange?

We keep many ecu’s in stock ready to be exchanged. If we don’t have a unit for exchange
ready in stock then we can always repair your own unit. If in the unlikely even your unit
is non-repairable, then we can source a replacement unit for you where possible.

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Due to the fact we are constantly aiming to lower our prices, we no longer list a price
list on our website. For our lowest prices call us on +44 208 853 5000 and a member of
our team will be happy to assist you. Further more you can click on the “Contact Us” link
to fill in our email form and a member from our team will respond to you within 24-48 hours.

Please note: If you are an international customer outside of the United Kingdom, you must
provide an email address when sending us an email.

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Why spend £1000’s on a new ecu which will come with a 12 months warranty when we can repair
your own unit saving you £100’s and offer the same warranty!

That’s right, with all our ecu services we offer a full “no-fuss” 12 months warranty.

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Ready To Send Us Your Unit?

When contacting us in regards to ecu’s, please have the ecu “part number” to hand.
This can be found on the ecu directly below where it says the make of the ecu.
I.E if your ecu is a BOSCH ecu, then the part number should start with “0261” or “0281”

If you’ve already been quoted and want to go ahead with our service, simple package your
unit in a small box or jiffy bag and send it to:

Unit 5 Brookmarsh Industrial Estate
70 Norman Road
SE10 9QE
United Kingdom

Also, please attach with the unit the make, model, year of car and also the fault with the
ecu or the problems it is giving you on the vehicle. Don’t forget to put your contact
details with it too so that we can contact you for payment once the work has been carried

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Call Us Today!
(UK) 08712 88 44 90

outside (UK) +44 20 8853 5000

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16 thoughts on “Engine ECU Test and Repair Services

  1. How much will it cost to remove crash data from
    Audi a6 2007 airbag module?


  2. Hello Shafi

    Thank you for your enquiry,

    We would need the part numbers from your Airbag Module to confirm. I have sent you an email requesting more information.

    Kind Regards


  3. 1994 Rover 214 1.4 Twin Cam Cabriolet
    Require an urgent repair of my ECU
    Can you help?
    I can deliver it to you asap.
    Dave Townsend

  4. Hello Dave

    Thanks for the enquiry,

    We’ve sent you an email with pricing and information.

    Kind Regards


  5. Hi there got an astra 1.6 I think it’s the z16xe engine. I’ve had it diagnosed with a fault. All wiring looms checked and parts the ecu is saying is the issue and an auto electrition has deemed the ecu to be faulty could you please provide me with a quote on repair.

  6. Hello Liam

    Thanks for the enquiry,

    Please provide the ECU part number so that I can quote you accurately on the repairs.

    Kind Regards


  7. My ecu unit tranmission is playing up on me. Missing gear and going into neutral. KX56*** is the plate number. How much will it be to repair.

  8. Hello Hasan

    Thanks for the enquiry,

    We can definitely repair it for you but we also carry replacement units in stock which we can program to your car so no additional coding / programming would be required on your part – making it fully plug & play!

    I’ve sent you a quick email with full information and pricing.

    Kind Regards


  9. Hi
    Our vauxhall zafira 08 is showing F Symbol and will not start.
    Had to people first local garage then green flag guy explain it is the ecu and will need easytronic gearbox accuater repaired.
    Just wondering how to locate part and how to remove or do you have mobile staff who can help Us remove it Then check and give to you to repair it.
    We live local.
    Many thanks.

  10. Hello Gary

    Thanks for the enquiry,

    We’ve sent you a quick email with full information and pricing on the repair of your Easytronic Gearbox Clutch Actuator unit.

    Kind Regards


  11. Good afternoon

    I have an astra easytronic and the gearbox ECU appears to be faulty. Fault codes are p1700 and u2106: no communication with TCM (there is no F symbol on the dash).

    I am going to have the Gearbox ECU removed and repaired, but was wondering if you could send me an email on the approximate cost to repair it.

    Thank you for your time.

  12. Hello Ohan

    Thank you for your enquiry,

    We can fully test & repair this type of fault and I’ve sent you a quick email with full information and pricing.

    Kind Regards


  13. Hi, I recently had a remap on my S5 4.2 2010. It was losing power and hesitated when accelerating gently so I asked for the original ecu file to be put back on. Now I have loads of fault codes which all point to the Engine Control Module. A garage has said maybe they have corrupted the ecu…. can you diagnosis check this and repair it?


  14. Hello Gavin

    Thanks for the enquiry,

    It does sound like they’ve loaded a corrupted file back onto the ECU. Possibly battery voltage was low when they took the original read and so the original could have been corrupted. We have a few options for you. You can either send the ECU to us and we can take a read off the ECU, check it and load a correctly coded original file for you or if you send us the ID file from the ECU, we can make a good working original file for your tuner to load onto the ECU for you. If the tuner is working with you to help correct the issues then second option may be better for faster turnaround.

    Note: If he had to remove the ECU to flash it, then best to send it in so we can check for any visible signs of damage.

    Kind Regards


  15. Hassan
    My Toyota corolla verso 2004 semi-automatic keeps on flashing neutral and does not get into E1 or reverse. and transmission light comes on at the dash can you help?

  16. Hello Hassan

    Thanks for the enquiry,

    We may be able to help you but will require the part numbers from your unit in order to confirm a test & repair.

    Kind Regards


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