Launch X431 and a 550 Maranello

The launch device starting coverage on Ferraris on the 575 .. it still should have the ability to read codes using the generic eobd button

What version of x431 do you have

Maybe post some screen shots

Are you doing a health scan ?

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I think if you search fatbillybob threads started I had that problem once. It was like serial communication could not be made and yeilds an OBD generic P code but I can't remember the issue or the solution but I found one.

I don't know what the X431 does but 1st thing I would check is if with a generic obd2 reader with or without blue tooth dongle into the obd2 port , do you have communication? Can you read codes? It is possible that there are still a few OBD ports still left disconnected for which there is a TSB to tell you how to reconnect the obd2 port.

On suspension there are many threads. Posts and threads by FerrariDriver are the important ones. He did the heavy lifting on figuring out the diagnosis and solutions. A quick start is to make sure the actuators in the front are not all wound up as they spin and twist the wires until they stop working. There is a process for actuator testing. These cars are 20 years old and a bad shock will throw a suspension code. The system self learns and self corrects and all lights go off when each component of the system is functioning properly.

 

Many Ferraris up to 2004, have a ground wire pin missing on the OBDII port that prevents communication. You might check and see that the service campaign was performed on your car. Even if it wasn't, you can probably add the pin yourself. I've attached the service campaign notice. This may, or may not be your issue.

"Service Campaign No. 148, OBD-II Connector applies to all Ferrari vehicles
produced between 1996 and 2004 calendar year for the North America market.
Immediately contact any Authorized Ferrari Dealer with your VIN in order to
arrange an appointment for your vehicle. This upgrade procedure is at no
cost to you. It is a correction of the ground in your SD2 connector which
can lead to false readings and improper diagnosis. If scheduled properly,
could be done while you wait and would take less than 1 hour."

 

There's quite a bit of 550 OBD reader information already in that dedicated section - maybe worth a look ?

 

Have you been able to confirm the ground pin is not missing on your OBD2 plug? Use the document I attached to verify by comparing the picture with what you have.

 

Have you tried rolling back the software version number in the updates menus?

I have 10.80 and it will only connect to one ECU (left) on my 360. If I use 10.25 it will connect to both perfectly.
To connect to the gearbox TCU I use the CFC231 from the 430 menu (CFC231 CS TCU). In 10.80 they’ve added CF231 to the 360 gearbox menu but it isn’t complete as it has not got the special functions menu.