Engine ECU 51806333 (MJD6F3.A4) – description
On this page you can buy ECU 51806333, a Magneti Marelli MJD 6F3.A4 unit intended for the Fiat 1.3 Multijet. It goes through a function test before dispatch. The housing has been refurbished – the electronics have not been repaired.
Does this ECU fit your car?
MJD 6F3.A4 units went into Fiat vehicles with the 1.3 Multijet engine. The model and year alone are not enough. Look at the label of your ECU: if it shows number 51806333 and type MJD 6F3.A4, it is the same version. A different part number is a different ECU.
Warranty and extra services
The ECU comes with a warranty of 6 months. Every unit passes a bench test and a test in our test car.
- Paid options on request: EGR OFF and DPF OFF.
Virgin version – no programming
We ship ECU 51806333 as Virgin. After fitting, it codes itself to the car and immobiliser – no programming is needed, as long as the part number matches and the immobiliser works.
On request we prepare an IMMO OFF version. The car will drive, but a red immobiliser warning stays on the dashboard and a fault remains in diagnostics that you cannot clear without pairing with the immobiliser. That is why we recommend Virgin.
Part number and ECU type
The part number on the label is what matters most when ordering:
- Part number: 51806333
- ECU type: Magneti Marelli MJD 6F3.A4 / MJD6F3.A4
- Hardware version: HW03P
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.
More units in the Fiat engine ECU category and on the FPT manufacturer page.
Similar numbers from this family: 51806501 MJD 6F3.P6, 51812866 MJD 6F3.H1, 51806506 MJD 6F3.PB, 51806497 MJD 6F3.P5.
Common questions about ECU 51806333 MJD6F3.A4
Does ECU 51806333 fit my car?
Check the label of your ECU: part number 51806333 and marking MJD 6F3.A4 and hardware version HW03P. If the numbers match, the ECU fits – the car model alone does not decide this.
|
Does the Virgin MJD 6F3.A4 need programming?
No. After fitting, ECU 51806333 codes itself to the car and immobiliser. The condition is a working immobiliser and a matching part number.
|
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.
|
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.
|
