Land Rover Defender/Discovery TD5 ECU fault

Discover/defender TD5 ECU fault

 

This TD5 2.5 ECU is a common failure for both the Land Rover Defender & Discovery, failure can cause the engine to cut out intermittently, normally after leaving the vehicle for a few minutes the engine will re-start, but this is not always the case.

A lot of customers have described a complete non start after the ECU has failed or even random cutting out over a certain rpm but then cutting back in again lower down the rev range. When the vehicle does not start it is very common that the engine ECU will fail to achieve communications to diagnostic equipment and therefore the rest of the electronic modules on the vehicle.

Failure of the ECU often happens suddenly with no prior warning, and when communications to the ECU is possible fault codes relating to injector issues are often found.

 

 

Common Failure symptoms:

  • Cutting out
  • No communication to the ECU
  • No start
  • Illumination of the engine management light

 

Common fault codes:

  • 0128 - Topside Switch Failed
  • 0123 through 0127 - Injectors 1 through 5 output drive peak too long
  • 0129 through 0133 - Injectors 1 through 5 output drive peak too long
  • 0135 through 0138 - Injectors 1 through 5 output drive open circuit

 

Affected Vehicles:

  • Defender 1994-2007
  • Discovery 1998-2005

 

(This is just a small list of common part numbers; we cover the entire Defender, Discovery and Discovery II TD5 ECU range, click your model to see more)

 

Test and rebuild:

Using bespoke test rigs we test the TD5 engine ECUs under real-world driving conditions. Once all of the faults have been identified our technicians move onto the rebuild stage. Using only higher rated components than standard we rebuild and then re-test the ECU to ensure that it meets OEM specifications.

 

Programming:

We retain all programming on the ECU during test and rebuild, meaning that the ECU is plug and play when you get it back from us.

 

Quality:

We have rebuilt and supplied Land Rover dealers and specialists all over the globe, 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 or model above and then click: Get yours rebuilt

Print the payment/booking confirmation email.

Package the Discovery/Defender 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 Discovery/Defender 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 ECU 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 TD5 ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Discovery/Defender engine ECU, then please contact us.

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