Citroen C4 Picasso/Grand Picasso, C5 and Dispatch starting problems – engine ECU fault.
Citroen C5, Dispatch, or C4 Picasso / Grand Picasso won’t start frequently due to a faulty Delphi DCM3.5 engine ECU.
The Delphi DCM3.5 ECU is a commonly failing part due to internal component malfunction, which causes intermittent and even permanent symptoms such as rough running, the engine management light illuminating, cutting out, and ultimately complete non-start of the vehicle.
By using diagnostic scanning equipment, you will likely find a host of fault codes that will indicate ECU failure, including those for sensor supply, the power relay de-energising at the wrong time, and internal processor faults, it is also possible for the engine ECU to fail in establishing communications permanently.
If you are faced with Citroen Dispatch, C4 Picasso / Grand Picasso, or C5 starting problems as described here, you may have been told that you need an entirely new replacement engine ECU, which will also require additional coding.
Instead, we offer an enhanced solution, for a fraction of the cost of buying new. You will avoid the need to pay for expensive re-coding, and unlike the short one-year warranty from the manufacturer, we will provide an unlimited mile lifetime warranty, for peace of mind.
Our in-house R&D team have identified a common defect that lies within this engine ECU, and have developed a rebuild solution using components that are higher rated than OE standard, all of which can be turned around within 2-3 working days working days.
Common Failure symptoms:
(Faults may occur intermittently or will remain permanent)
- Engine management light on
- Cutting out
- No start / non-runner
- No communications to engine management system
Common fault codes:
- P068A – PCM Power Relay De-Energised Too Early
- P0606 – PCM Processor Fault
- P060C – Internal Control Module Main Processor Performance
- P0659 – Supply of Sensors 5V No 1
- P2671 – Supply of Sensors 5V No 2
- P2686 – Supply of Sensors 5V No 3
Common failing part numbers:
Citroen C4 Picasso / Grand Picasso
Citroen C5
Citroen Dispatch
Citroen DS4
Citroen DS5
(Can’t find your part number? Check our full engine ECU catalogue for C4 Picasso, C5, Dispatch, DS4 or DS5)
Test and rebuild:
Our bespoke Hardware-In-the-Loop testing rigs, and experience technical knowledge has allowed us to identify all internal ECU faults. Once all faults have been identified, our technicians will rebuild the engine ECU, and replace all failing components with higher rated than standard versions. The ECU is then extensively re-tested to ensure that no faults remain, because we only use OEM or above rated components, our quality control second to none.
Programming:
All original programming is retained during the rebuilding process, meaning that you can plug and play the ECU once you receive it back.
Quality:
Each rebuild adheres to our strict Lifetime Warranty standards before it leaves our premises, every step of the rebuilding process is subject to strict quality control procedures, which includes testing, replacement components, and workmanship, which is reflected in a defect rate no higher than 0.49% across all of our services. This quality assurance process is why we are the number one choice for remanufacturing services for specialists and dealerships around the globe.
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 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 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 engine management 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 unit 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 faulty engine ECU and return it to you with an unlimited mileage warranty.
If you require further information regarding this Citroen C5, Dispatch, C4 Picasso engine ECU then please contact us.