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Body Control Unit RepairCitroen C4 Picasso/Grand Picasso, C5 and Dispatch Starting Problems – Engine ECU Fault
If your Citroen C5, Dispatch, or C4 Picasso / Grand Picasso is experiencing frequent starting issues attributed to a faulty Delphi DCM3.5 engine ECU, you’re not alone. The Delphi DCM3.5 ECU often fails due to internal component malfunctions, leading to symptoms such as rough running, engine management light illumination, cutting out, and, ultimately, complete non-start of the vehicle.
Diagnostic scanning equipment is likely to reveal fault codes indicating ECU failure, including those related to sensor supply, power relay de-energizing at the wrong time, and internal processor faults. In some cases, the engine ECU may permanently lose communication capability.
While you may have been advised to replace the entire engine ECU with the additional cost of coding, there’s an alternative solution that we offer at a fraction of the price. Our enhanced solution involves rebuilding the ECU using higher-rated components than the original equipment (OE) standard. This process, conducted by our in-house R&D team, can be completed within 2-3 working days.
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Affected Vehicles
- Citroen C4 Picasso / Grand Picasso (first and second generation) 2008 – 2013
- Citroen C5 (second generation) 2009 – 2015
- Citroen Dispatch (second generation) 2010 – 2016
- Citroen DS4 2011 – 2015
- Citroen DS5 2012 – 2015
Common Failure Symptoms
- 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: 9806127380 / 28381996
- Citroen C5: 9666557180 / 28218265, 9806127380 / 28381996
- Citroen Dispatch: 9806127380 / 28381996, 9678514580 / 28312280
- Citroen DS4: 9677563880 / 28303589
- Citroen DS5: 9806127380 / 28381996
Test and Rebuild Process
- Our Hardware-In-the-Loop testing rigs and technical expertise identify all internal ECU faults. After identification, our technicians rebuild the engine ECU, replacing all faulty components with higher-rated versions. Rigorous testing follows to ensure a fault-free ECU. Original programming is retained during the rebuilding process, allowing for a plug-and-play experience upon receiving the ECU.
Quality
- Our strict quality control, including testing, replacement components, and workmanship, ensures a defect rate of no higher than 0.49% across all our services.
Warranty
- We provide a lifetime unlimited mileage warranty for added peace of mind.
How to Get Your Unit Rebuilt?
- Select your part number and click “Get your repaired.”
- Print the payment/booking confirmation email.
- Package the engine ECU securely with the confirmation email.
- Send the package via tracked courier (shipping instructions provided in the confirmation email).
- Upon receipt, we will test, rebuild, and return your ECU with a lifetime warranty.
If you prefer not to pay upfront?
- Fill and submit the repair form.
- Print the booking confirmation email.
- Package the engine management ECU securely with the confirmation email.
- Send the package via tracked courier (shipping instructions provided in the confirmation email).
- After testing, we will call you with the outcome. If your ECU is faulty and you choose to proceed with the rebuild, payment can be made over the phone using a debit/credit card. The rebuilt engine ECU will then be returned to you with an unlimited mileage warranty.
For further information, please contact us.
Contact AUTOTRONICS at 0116 276 7054 or email us at [email protected] for expert assistance. Our experienced engineers are here to solve all your queries and provide top-notch services.
