51856403 CFC328F.02 – Selespeed Gearbox Control Unit FIAT 500
The offered Selespeed gearbox control unit with part numbers 51856403 and CFC328F.02 (CFC328F02) is an original control module for the semi-automatic transmission used in FIAT models equipped with the electrohydraulic Selespeed / Dualogic system.
The unit has been fully tested, checked for CAN communication, actuator control and correct operation of hydraulic valves. The module is covered by a written warranty and prepared for professional installation in the vehicle according to the part number.
Most important – compatibility by part number
In the case of Selespeed controllers, matching by number is essential. If your module displays the number:
- 51856403
- CFC328F.02
- CFC328F02
this means full hardware and software compatibility – regardless of the vehicle equipment version.
Application – models and engines
The gearbox controller 51856403 / CFC328F.02 was used in the following models:
- FIAT 500 (approx. 2007–2015)
- FIAT 500C (cabrio version)
- FIAT Panda (selected versions with Dualogic transmission)
Typical engine units working with this module:
- 1.2 8V petrol – engine code 169A4000
- 1.4 16V petrol – engine code 169A3000
- 1.3 Multijet Diesel – 199A2000 / 199B1000
Note: final compatibility should always be confirmed by number 51856403 or marking CFC328F.02 on your controller.
Symptoms of a faulty Selespeed control unit
- Inability to change gears
- Gearbox remains in neutral (N)
- Jerking when starting
- CAN communication errors with the gearbox
- Clutch adaptation failure
- Transmission emergency mode
In many cases, the cause of the problem is damage to the control electronics or cold solder joints inside the CFC328F02 module.
Condition and preparation
The offered controller is:
- ✔ fully tested on a test bench
- ✔ communication and valve control tested
- ✔ no internal faults
- ✔ warranty included
- ✔ professionally sealed housing
The module is prepared as a unit ready for installation according to the part number.
FAQ – Frequently Asked Questions (Long Tail SEO)
Does controller 51856403 fit FIAT 500 1.2 8V from 2009?
Yes, if your vehicle has a module with number 51856403 or CFC328F.02, it will be fully compatible with the 1.2 8V Selespeed version.
CFC328F02 – can it be installed in FIAT 500C 1.4 16V?
Yes, provided the part number matches. The 1.4 16V version with Dualogic transmission uses the same type of controller.
FIAT Panda 1.3 Multijet – is number 51856403 suitable?
In selected versions with semi-automatic transmission yes, however the number on the controller housing should always be checked.
How do I check if my controller is CFC328F.02?
The number is located on the module label. It may be written as CFC328F.02 or CFC328F02 – both markings are equivalent.
Will 51856403 solve the issue of the gearbox staying in neutral (N)?
If the cause is faulty controller electronics, replacing the module often solves the problem. Prior diagnostics are recommended.
Does controller CFC328F.02 require adaptation after installation?
In most cases, clutch adaptation and gearbox calibration are required using appropriate diagnostic equipment.
51856403 FIAT 500 1.3 MJT – is it compatible with year 2012?
Yes, if the controller number in your vehicle is identical – compatibility is always confirmed by part number.
Is number 51856403 interchangeable with other CFC328F versions?
Not all versions are interchangeable. Full marking compatibility – CFC328F.02 – is essential.
