ECU 55283481 – what to know
We offer a working MJD 9DF.B1 unit (Magneti Marelli) with part number 55283481. It controls the engine of the Fiat 500 1.3 Multijet. We test every unit before dispatch.
Does this ECU fit your car?
This unit comes from a Fiat 500 1.3 Multijet. The model and year alone are not enough. Look at the label of your ECU: if it shows number 55283481 and type MJD 9DF.B1, it is the same version. A different part number is a different ECU.
Symptoms that may point to an ECU failure
- Diagnostics cannot connect to the ECU.
- The engine will not fire, the injectors get no signal.
- The fault appeared after water got in or after a short in the harness.
- The ECU has no power despite working fuses.
The cause may also be the wiring, the power supply or a sensor. Diagnose first, then buy.
Part number and ECU type
The part number on the label is what matters most when ordering:
- Part number: 55283481
- ECU type: Magneti Marelli MJD 9DF.B1 / MJD9DF.B1
Virgin or IMMO OFF
- Virgin – Plug & Play: after fitting, the ECU codes itself to the car and immobiliser, no programming needed. Condition: matching part number and a working immobiliser.
- IMMO OFF on request: the car runs correctly, but a red immobiliser warning appears on the dashboard and a fault is stored in diagnostics that cannot be cleared without pairing with the immobiliser. The Virgin version does not have this fault.
What we check before dispatch
We first test ECU 55283481 on the bench and then fit it to our test car. Only a working unit is shipped. Instead of the Virgin version, we can also clone your old ECU at no extra cost – we then need the data from your current unit. For an extra charge we carry out chip tuning, EGR OFF and DPF OFF. The warranty is 6 months.
More units in the Fiat engine ECU category and on the FPT manufacturer page.
Similar numbers from this family: 55274938 MJD 9DF.B1, 52096056 MJD 9DF.G1, 55279207 MJD 9DF.X1, 51806333 MJD 6F3.A4.
Questions and answers – ECU 55283481
How do I know that 55283481 will fit?
Check the sticker on your ECU. If it shows number 55283481 and type MJD 9DF.B1, it is the same version. The car model and year alone are not enough.
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Do you offer chip tuning, EGR OFF and DPF OFF for this ECU?
Yes, these are paid extra options that we carry out on request before the ECU is shipped.
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How do you test ECU 55283481?
We check every unit on the bench and then fit it to our test car. The warranty is 6 months.
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Can I clone my old ECU instead of the Virgin version?
Yes, cloning is included in the price of ECU 55283481. We need the data from your current unit.
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