51806508 MJD 6F3.P8 – 1.3 Multijet engine ECU
Part number 51806508 identifies a Magneti Marelli MJD 6F3.P8 ECU for the Fiat 1.3 Multijet. Before shipping, we check it on the bench and in our test car. The housing has been refurbished – the electronics have not been repaired.
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.
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.
Typical symptoms of a faulty MJD 6F3.P8 ECU
A damaged ECU can stop the engine from starting because the injectors receive no signal. The tester then cannot connect to the unit, and a measurement may show no power at the ECU despite good fuses. The failure can follow water ingress or a short circuit in the wiring.
The same symptoms can, however, come from a fault in the harness, power supply or sensors, so run a diagnosis before buying.
How to check compatibility
MJD 6F3.P8 units went into Fiat vehicles with the 1.3 Multijet engine. The safest way is to compare labels: part number 51806508 and marking MJD 6F3.P8 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.
Part number and ECU type
The part number on the label is what matters most when ordering:
- Part number: 51806508
- ECU type: Magneti Marelli MJD 6F3.P8 / MJD6F3.P8
- Hardware version: HW03P
Useful links
Common questions about ECU 51806508 MJD6F3.P8
How do I know that 51806508 will fit?
Check the sticker on your ECU. If it shows number 51806508 and type MJD 6F3.P8 and hardware version HW03P, it is the same version. The car model and year alone are not enough.
|
Does the Virgin MJD 6F3.P8 need programming?
No. After fitting, ECU 51806508 codes itself to the car and immobiliser. The condition is a working immobiliser and a matching part number.
|
Can I order extra services for ECU 51806508?
Yes, for an extra charge we carry out EGR OFF and DPF OFF. These options are done on request before dispatch.
|
What is the warranty on ECU 51806508?
The warranty is 6 months. Before dispatch, the ECU passes a bench test and a test in our test car.
|
