ECU 51862560 – what to know
We offer a working MJD 6F3.S1 unit (Magneti Marelli) with part number 51862560. It controls the engine of the Fiat Strada 1.3 Multijet. We test every unit before dispatch.
What we check before dispatch
We first test ECU 51862560 on the bench and then fit it to our test car. Only a working unit is shipped. For an extra charge we carry out EGR OFF and DPF OFF. The warranty is 6 months.
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: 51862560
- ECU type: Magneti Marelli MJD 6F3.S1 / MJD6F3.S1
Fitting without programming
Virgin Plug & Play means that once connected, the ECU adapts itself to the car and immobiliser. Two things are needed: the same part number (51862560) and a working immobiliser.
The IMMO OFF version is available on request, but it leaves a red immobiliser warning on the dashboard and a fault in diagnostics that cannot be removed without pairing with the immobiliser. Virgin has no such fault.
How to check compatibility
This unit comes from a Fiat Strada 1.3 Multijet. The safest way is to compare labels: part number 51862560 and marking MJD 6F3.S1 must be the same as on your ECU. If the number differs, it is a different version – look for your number in the category or ask us.
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.
Looking for a different number? See also: 51806333 MJD 6F3.A4, 51806501 MJD 6F3.P6, 51812866 MJD 6F3.H1, 51806506 MJD 6F3.PB. The full range is in the Fiat engine ECU category, and the FPT page tells you more about the manufacturer.
Questions and answers – ECU 51862560
Does the Virgin MJD 6F3.S1 need programming?
No. After fitting, ECU 51862560 codes itself to the car and immobiliser. The condition is a working immobiliser and a matching part number.
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What is the difference between IMMO OFF and Virgin?
With IMMO OFF the car runs, but a red immobiliser warning stays on the dashboard and a fault remains in diagnostics that cannot be cleared. The Virgin version does not have this fault, which is why we recommend it.
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Do you offer 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 51862560?
We check every unit on the bench and then fit it to our test car. The warranty is 6 months.
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