Vauxhall Adam and Corsa E engine ECU failure - causing non-start

This Vauxhall Adam and Corsa E engine ECU is a common failure that prevents the engine starting or cranking over. These AC Delco E78 engine ECUs all suffer from a common manufacturing defect that causes a loss of activation signal to the main relay, preventing engine system power up or the starter motor activation. Internal ECU malfunction also inhibits reference voltage outputs required for sensor activation. When diagnosing the non-start problem, you will often find that the engine system will fail to communicate with your diagnostic equipment while the engine fails to start/crank-over.

These problems are frequently intermittent to begin but become permanent if not resolved, causing complete and constant non-start.

Other problems encountered with this ECU, though less common than the non-start issue, include running symptoms such as loss of power, cutting out and limp mode activation. The engine management warning light will be illuminated and the message ‘Engine Power Is Reduced’ may appear on the dash.

This ECU is fitted into an array of Vauxhall models, across a variety of engines, including Adam, Astra J, Corsa D facelift models, Corsa E, Mokka and Zafira Tourer C. That’s a huge number of vehicles to suffer from non-starting failure.

You may seek to resolve these issues by purchasing new from manufacturer. However, this will require coding to the vehicle (adding further costs) and will only come with a short one year guarantee.

As market leaders in remanufacture of vehicle electronics we have another, more cost effect solution – rebuild your original ECM/ECU.

We see a substantial amount of these ECU’s coming into us for repair due to malfunction of internal components. Our test and rebuild service is second to none. We can have your Vauxhall Adam/Corsa E engine ECU repaired and back to you, without the need for coding, for a fraction of the cost of a new ECU. Along with a Lifetime Warranty for your peace of mind, this is truly the best option.

Common Failure symptoms:

• No start / no crank
• Main relay not powering up
• No comms to ECU
• Lose power / cut out
• Limp home mode
• Engine management light
• 'Engine Power is Reduced' message on dash

Common fault codes:

• U0100 – Lost Communication With ECU/ECM
• P0641 – Sensor Reference Voltage “A” Circuit Malfunction
• P0651 – Sensor Reference Voltage “B” Circuit Malfunction
• P0697 – Sensor Reference Voltage “C” Circuit Malfunction
• P06A3 – Sensor Reference Voltage “D” Circuit/Open
• P0689 – Engine Controls Ignition Relay Feedback Circuit Low Voltage
• P1682 – Ignition 1 Switch Circuit 2
• P00C7 – Intake Air Pressure Measurement System
• P0106 – Manifold Absolute Pressure (MAP) Sensor Performance
• P262B – Control Module Off Timer Performance

Test and rebuild:

Using our in-house bespoke Hardware In-the-Loop rigs and testing procedures we will identify defects and repair these ECM/ECU’s, providing a full Lifetime Warranty with confidence. We only use OEM or above rated components and our quality control is second to none.

Programming:

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

Quality:

Our rebuild work is world renowned; franchise dealerships and specialists across the globe benefit from our services. Our work defect rate is lower than 0.49% on all our rebuilds, so you can be assured of our very high standard of work.

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 Corsa E/Adam 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/ECM 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 Vauxhall Adam/Corsa E 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/ECM 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 engine ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Vauxhall Adam/ Corsa E engine ECU then please contact us.