DPC-806 Ford Transit Engine ECU Fault

Do you have a 2.0L or 2.4L TDDi Ford Transit vehicle that won’t start and has a P1665 DTC stored? It sounds like you’re experiencing a common DPC-806 engine ECU malfunction. Thankfully, we’re the experts at remanufacturing them in just 2-3 working days with a lifetime warranty included. 

Shop Now – DPC-806 rebuild service

You’ll find these control modules wreaking havoc in Mk6 models manufactured between 2003-2006. When failure strikes, communication between the ECU and fuel pump is lost, and related DTCs like P1665 and P1608 will store in your 2.0L/2.4L Ford Transit. As you might expect, this causes symptoms like starting issues, cutting out and rough running. In more extreme cases of failure, you’ll be unable to start the vehicle at all when the DPC-806 is defective.

If you suspect a faulty ECU is the source of your 2.4L Ford Transit’s P1665 code, then send it to us for testing by completing this test form. We’ll let you know conclusively whether your DPC-806 is defective or not, and if it is, we’ll remanufacture it to restore lasting functionality. 

Ford Transit (2.0/2.4) P1665 fault explained 
As mentioned, a defective DPC-806 ECU is a leading cause of the P1665 DTC in 2.4L Ford Transit vehicles. These units are only fitted to TDDi engines and they frequently fail as a result of internal component degradation. This significantly disrupts the control module’s normal operation and prevents it from carrying out important functions. 

As you’ll know, when fully-operational, the engine ECU plays a critical role in fuel delivery by calculating everything from the required fuel quantity to injection timing. In order for sufficient fuel to enter the combustion chamber, the engine ECU must work in tandem with the fuel pump. In the TDDi Mk6 Transit, the vehicle’s fuel pump is also fitted with a control module – this is commonly referred to as an electronic diesel control (EDC) module. 

The engine ECU sends signals to the EDC module, which in turn, controls the fuel pump to deliver the correct amount of fuel at the correct time to the injectors. When this communication breaks down momentarily or completely because of a defective DPC-806 ECU, the combustion process is disrupted, which leads to one or more of the aforementioned symptoms.

Now, it’s important to understand that both the DPC-806 ECU and the VP44 EDC module are vulnerable to failure, and they cause similar fault symptoms. However, one indication that your Ford Transit’s (2.0L/2.4L) engine ECU has malfunctioned is the presence of these fault codes:

• P1665 - Injection Pump Control Module Communication
• P1608 - Fuel Injection Watchdog Signal Lost

If you’ve scanned your vehicle and found a P1664 or P1564 DTC stored, it’s much more likely that your EDC module is defective. Fortunately, we also remanufacture these units and you can find them in our product catalogue. 

How to resolve DPC-806 ECU failure
Now, when most owners have traced their P1665 fault back to a defective engine ECU in their 2.4L Ford Transit, they choose to replace it with a brand new one. This might seem like a fairly simple solution, however, most don’t realise that brand-new units are often just as vulnerable to failure as your original.

This is why we’d always recommend having your DPC-806 remanufactured in order to resolve the root cause of failure properly. 

Remanufacturing is a process that involves strengthening all weak points of the control module’s inner circuitry. This means that not only is the original fault resolved, but other potential areas of weakness are also addressed, ensuring the unit remains fully-functional for the long-term.

Our solution
Fortunately, this is the exact service we provide for the DPC-806 ECU. Send yours to us and have it tested and remanufactured within 2-3 working days.

We utilise custom-built hardware-in-the-loop testing rigs which examine DPC-806s under realistic operating conditions. This allows us to pinpoint the weakness that caused the P1665 fault in your 2.4L Ford Transit accurately and efficiently.

Your control module will then be remanufactured with longevity in mind, which includes the use of higher-than-OEM-standard components. We’ll cover you with an unlimited-mile lifetime warranty and you won’t have to recode the ECU back to the vehicle either.

Resolve the P1665 DTC in your 2.0L or 2.4L Ford Transit properly by having your DPC-806 ECU remanufactured by us – complete this test form to get started today. 

Common failure symptoms:

• Loss of communication with the fuel pump
• Starting issues
• Cutting out
• Rough running

Common fault codes:

• P1665 - Injection Pump Control Module Communication
• P1608 - Fuel Injection Watchdog Signal Lost
• P0216 - Injection Timing Control Circuit
• P1631 - PCM Main Relay

Test and rebuild:
We use state-of-the-art testing rigs to analyse your defective control module, allowing us to swiftly and confidently locate the root cause of failure. We’ll then rebuild your ECU with top-grade components and the latest equipment to restore lasting functionality.

Programming:
Don’t worry about having to recode the rebuilt module back to the vehicle, we restore all coding information and immobiliser integrity throughout our process. 

Quality:
Our entire process is geared towards continuous improvement and we strive to provide an excellent standard of service to the industry. This is evidenced by our industry-leading defect of 0.49%. 

Warranty:

Lifetime unlimited mileage*

How do I get my unit rebuilt?

To pay for the rebuild click the Shop Now link above, select your part number and click: Get yours rebuilt.

Print the payment/booking confirmation email.

Package the engine ECU inside a sturdy box with plenty of packaging material and 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 DPC-806 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 these steps:

Fill in and submit this test form.

Print the booking confirmation email.

Package the Transit ECU inside a sturdy box with plenty of packaging material and 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 unit and call to inform you of the outcome of testing. If your DPC-806 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 control module and return it to you with an unlimited mileage warranty.

If you require further information regarding this DPC-806 ECU then please contact us.