Engine ECU 51880749 (MJD6F3.D7) – description
On this page you can buy ECU 51880749, a Magneti Marelli MJD 6F3.D7 unit intended for the Fiat Doblo 1.3 Multijet. It goes through a function test before dispatch.
Preparation before dispatch
- Bench test.
- Fitting and check in our test car.
- On request, for an extra charge: EGR OFF and DPF OFF.
Warranty on the ECU: 6 months.
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.
When the ECU may be faulty
An engine ECU failure may show up as:
- no start and no signal at the injectors,
- the diagnostic tool cannot connect to the ECU,
- the ECU gets no power even though the fuses are OK,
- problems after water damage or a short in the wiring.
Faults in the wiring, power supply or sensors can cause similar symptoms, so run a diagnosis before you buy.
Numbers to compare with your label
The housing of the original ECU carries a sticker with its numbers. On this unit they are:
- Part number: 51880749
- ECU type: Magneti Marelli MJD 6F3.D7 / MJD6F3.D7
Vehicle compatibility
This unit comes from a Fiat Doblo 1.3 Multijet. Compatibility is decided by the part number on the label, not just by the model and year – compare number 51880749 and marking MJD 6F3.D7 with your ECU. A different part number means a different ECU version.
More units in the Fiat engine ECU category and on the FPT manufacturer page.
Similar numbers from this family: 51862560 MJD 6F3.S1, 51806333 MJD 6F3.A4, 51806501 MJD 6F3.P6, 51812866 MJD 6F3.H1.
Frequently asked questions about ECU 51880749 MJD 6F3.D7
Does ECU 51880749 fit my car?
Check the label of your ECU: part number 51880749 and marking MJD 6F3.D7. If the numbers match, the ECU fits – the car model alone does not decide this.
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Should I choose Virgin or IMMO OFF?
We recommend Virgin. IMMO OFF lets you drive, but leaves a red immobiliser warning on the dashboard and a fault in diagnostics that you cannot clear without pairing with the immobiliser.
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Can I order extra services for ECU 51880749?
Yes, for an extra charge we carry out EGR OFF and DPF OFF. These options are done on request before dispatch.
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How do you test ECU 51880749?
We check every unit on the bench and then fit it to our test car. The warranty is 6 months.
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