What you get when you buy 55246950
Preparation for the vehicle
- Virgin: codes itself to the vehicle and immobiliser, with no faults, with no programming.
- IMMO OFF (on request): the engine runs normally, but an immobiliser fault and red warning light remain; only immobiliser programming removes them.
Condition for Virgin: matching numbers and a working immobiliser.
Additional services
- cloning data from your old ECU – free, on request,
- chip tuning, EGR OFF, DPF OFF – extra cost,
- warranty: 6 months.
Numbers on the label
- Part number: 55246950
- ECU type: Magneti Marelli MJD 8F3.B1
This unit comes from a Fiat Ducato 2.3 Multijet. The part number 55246950 decides – compare it together with the MJD 8F3.B1 marking on your ECU. Different number? Check 55246589 / MJD 8F3.B21, 55246597 / MJD 8F3.B2, 55253528 / MJD 8F3.BD, 55255953 / MJD 8F3.BD.
Condition in which we ship it
Used ECU 55246950 that passes a bench test and a trial in our test car before shipping.
Symptoms – diagnosis first
Most often: the engine does not start and there is no injector control, no communication in diagnostics, no power to the ECU with good fuses, or a failure after water ingress or a short circuit. Wiring, power supply or sensors can cause the same – run a diagnosis before buying.
You will find other numbers in the Fiat Engine Control Units (ECUs) category.
FAQ: Fiat Ducato, ECU 55246950
Does ECU 55246950 fit my Ducato 2.3 Multijet?
Check the label: part number 55246950 and marking MJD 8F3.B1. If they match, the ECU fits – the vehicle model alone does not decide.
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Does ECU 55246950 need programming?
No. In Virgin version it codes itself to the vehicle and immobiliser (with matching numbers and a working immobiliser).
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How does IMMO OFF differ from Virgin?
With IMMO OFF the vehicle runs, but an immobiliser fault and a red warning on the dashboard remain – only immobiliser programming removes them. Virgin has no such fault.
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