How to choose ECU 51904061 MJD 8F2.G1
This is a working Magneti Marelli MJD 8F2.G1 engine control unit with part number 51904061, for the Fiat Punto 1.3 Multijet. The unit is tested before dispatch.
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 (51904061) 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.
Numbers on the label
- Part number: 51904061
- ECU type: Magneti Marelli MJD 8F2.G1 / MJD8F2.G1
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.
Does this ECU fit your car?
This unit comes from a Fiat Punto 1.3 Multijet. The model and year alone are not enough. Look at the label of your ECU: if it shows number 51904061 and type MJD 8F2.G1, it is the same version. A different part number is a different ECU.
Tests, options and warranty
- Every ECU is tested on the bench and fitted to our test car before dispatch.
- Paid extra options: EGR OFF and DPF OFF.
- Warranty: 6 months.
If your ECU has a different part number, check 51892330 MJD 8F2.A3, 51892332 MJD 8F2.D1, 51896809 MJD 8F2.G4, 51871693 MJD 8F2.G3 or the whole Fiat engine ECU category. About the manufacturer: FPT.
Questions and answers – ECU 51904061
How do I know that 51904061 will fit?
Check the sticker on your ECU. If it shows number 51904061 and type MJD 8F2.G1, it is the same version. The car model and year alone are not enough.
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Does the Virgin MJD 8F2.G1 need programming?
No. After fitting, ECU 51904061 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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Can I order extra services for ECU 51904061?
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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