51986262 9GF.T6 Engine ECU – Fiat 500 1.2 Petrol
Original FPT/Magneti Marelli engine control unit designed for selected Fiat 500 versions equipped with the 1.2 8V petrol engine. The ECU has been prepared as VIRGIN Plug & Play and, once correctly installed, automatically stores the vehicle immobiliser data.
51986262 ECU applications
- Fiat 500 – 3-door hatchback;
- 1.2 8V petrol engine, 51 kW / 69 hp;
- engine code 169A4000;
- manual transmission;
- version without Start-Stop system;
- selected Euro 6 vehicles from the generation manufactured approximately between 2007 and 2019.
Before purchasing, compare the OEM number 51986262, references 9GF.T6 and BC.0116757.E, HW003 hardware version and connectors with your original ECU. The vehicle model, engine capacity or year of manufacture alone are not sufficient to confirm compatibility.
Common symptoms of a faulty engine ECU
- engine will not start or stalls shortly after starting;
- misfires on one or more cylinders;
- rough engine operation or fluctuating idle speed;
- no control of an ignition coil or fuel injector;
- no diagnostic communication with the ECU;
- check engine light and limp mode.
Similar symptoms may also be caused by faulty spark plugs, ignition coils, injectors, sensors, damaged wiring or an incorrect power supply. We recommend carrying out a full vehicle diagnosis before replacing the ECU.
Programming and VIRGIN ECU preparation
The ECU has been prepared as VIRGIN Plug & Play. Its immobiliser memory has been cleared, allowing the unit to program itself after installation in a correctly matched vehicle during the first successful engine start.
- cloning data from the original ECU is not required;
- the ECU must be installed in a vehicle with a fully functional immobiliser system;
- stable battery voltage is required during the first start;
- diagnostic configuration may be required if the vehicle equipment differs;
- all ECU references must be checked for compatibility before installation.
Frequently Asked Questions
Is the 51986262 ECU compatible with the Fiat 500 1.2?
This ECU is used in selected Fiat 500 versions equipped with the 1.2 8V petrol engine. Compatibility must be confirmed by comparing all references on the original ECU.
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Is the 9GF.T6 BC.0116757.E ECU compatible with Start-Stop versions?
The label on this ECU indicates a version without the Start-Stop system. It should not be installed in a Start-Stop vehicle without first confirming the compatibility of the part numbers and software.
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Does the Fiat 500 1.2 VIRGIN ECU program itself?
Yes. The VIRGIN ECU automatically stores the immobiliser data during the first successful engine start after installation in the vehicle.
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Does the FPT 51986262 ECU need to be cloned?
No. Cloning the original ECU is not required. The unit has been reset and prepared as a self-programming VIRGIN Plug & Play ECU.
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Does the Magneti Marelli 9GF.T6 ECU come with a warranty?
Yes. The ECU is tested and prepared before sale and is covered by a 6-month warranty.
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