28459226 – BG91-12A650-FFF Ford Delphi DCM3.5 Engine ECU
The Ford engine ECU offered here, with OEM number BG91-12A650-FFF and manufacturer number 28459226, belongs to the Delphi DCM3.5 family. The unit is designed for selected Ford vehicles equipped with the 2.0 TDCi diesel engine.
BG9112A650FFF ECU applications
- Ford S-MAX 2.0 TDCi – selected versions, mainly from approximately 2010–2015;
- Ford Galaxy 2.0 TDCi – selected versions from a similar production period;
- Ford Mondeo Mk4 2.0 TDCi – selected facelift versions;
- Ford Kuga and Focus 2.0 TDCi – only versions using the identical Delphi DCM3.5 ECU.
The vehicle model, engine capacity or year of manufacture alone are not sufficient to confirm compatibility. Before purchasing, compare the full number BG91-12A650-FFF, the compact reference BG9112A650FFF and the Delphi number 28459226 with the label on the original ECU.
Common symptoms of a faulty engine ECU
- engine will not start despite a functional battery and starter motor;
- intermittent engine stalling or problems restarting the engine;
- no diagnostic communication with the engine ECU;
- irregular engine operation and limp mode;
- ECU power supply or main relay faults, including code P068A;
- recurring actuator-related fault codes despite correctly functioning wiring and components.
Similar symptoms may also be caused by damaged wiring, power supply or ground faults, fuses, relays or CAN bus problems. A full vehicle diagnosis is recommended before replacing the ECU.
Programming, cloning and DCM3.5 ECU preparation
This ECU is not intended for installation without carrying out a diagnostic procedure. After installation, it requires PATS adaptation, which involves programming the ECU and synchronising the vehicle's anti-theft starting system. This procedure can be carried out using FORScan or Ford IDS.
- PATS adaptation requires suitable diagnostic equipment and access to the required service functions;
- after completing the procedure, stored fault codes should be cleared and communication with all modules checked;
- depending on the vehicle configuration, the correct ECU configuration may need to be checked or programmed;
- 1:1 cloning is possible only if all required data can be correctly read from the original ECU;
- both the original ECU and the replacement unit must be sent for the cloning service.
Before ordering the cloning service, the communication status of the faulty ECU should be confirmed. If a complete read is not possible, the appropriate solution is to prepare the replacement ECU for PATS adaptation in the vehicle.
Frequently Asked Questions
Is the BG91-12A650-FFF ECU compatible with the Ford S-MAX 2.0 TDCi?
This part number is used in selected Ford S-MAX 2.0 TDCi versions. Before purchasing, compare the complete BG91-12A650-FFF and 28459226 references with the original ECU.
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Does the Ford DCM3.5 engine ECU require programming?
Yes. After installation, the ECU requires PATS adaptation and synchronisation with the vehicle using FORScan or Ford IDS.
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Can the Delphi 28459226 ECU be cloned?
Cloning is possible if all required data can be correctly read from the original ECU. Both units are required for the cloning service.
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Is the BG9112A650FFF ready to start the vehicle immediately after installation?
No. Installation alone is not sufficient because the ECU must be programmed to the PATS anti-theft system using suitable diagnostic equipment.
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Is the 28459226 ECU compatible with every Ford 2.0 TDCi?
No. Ford used different DCM3.5 hardware and software versions. Compatibility must be confirmed using the complete references on the original ECU label, not only the vehicle model and engine capacity.
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