How to choose ECU 51806497 MJD 6F3.P5
This is a working Magneti Marelli MJD 6F3.P5 engine control unit with part number 51806497, for the Fiat 1.3 Multijet. The unit is tested before dispatch. The housing has been refurbished – the electronics have not been repaired.
Vehicle compatibility
MJD 6F3.P5 ECUs were fitted to Fiat cars with the 1.3 Multijet engine. Compatibility is decided by the part number on the label, not just by the model and year – compare number 51806497 and marking MJD 6F3.P5 with your ECU. A different part number means a different ECU version.
Label data of ECU 51806497
- Part number: 51806497
- ECU type: Magneti Marelli MJD 6F3.P5 / MJD6F3.P5
- Hardware version: HW03P
The type may be written with a space (MJD 6F3.P5) or without it (MJD6F3.P5) – it is the same type.
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.
What we check before dispatch
We first test ECU 51806497 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.
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.
More units in the Fiat engine ECU category and on the FPT manufacturer page.
Similar numbers from this family: 51806508 MJD 6F3.P8, 51786121 MJD 6F3.P5, 51796242 MJD 6F3.PB, 51806505 MJD 6F3.P5.
FAQ: 51806497 (MJD 6F3.P5)
Does the Virgin MJD 6F3.P5 need programming?
No. After fitting, ECU 51806497 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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What is the warranty on ECU 51806497?
The warranty is 6 months. Before dispatch, the ECU passes a bench test and a test in our test car.
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