We do not have a full sheet for this code yet, with its causes and checks. What you see here comes from the OBD2 code standard.
System
Body (B)
Code type
Manufacturer-specific code: its exact meaning depends on the make.
What do I do now?
If the engine light flashes, the car loses a lot of power, overheats or the brakes fail, stop somewhere safe and call for assistance.
If the car drives normally, book a garage and show them this code: its exact meaning and the cause depend on each model.
Tell us what you notice: the diagnosis takes the code, your car and the symptoms into account.
Where is it on the car?
This code does not point to the engine, the brakes or the transmission: you will see the X-ray car with no area marked.
Related faults in the database
The door is slow to open and the window drops in steps when it loses calibration (Maserati GranTurismo and GranCabrio)Bodywork
Engine / equipment
Maserati GranTurismo and GranCabrio (all versions, according to the bulletin)
Period mentioned
All model years (US bulletin)
Symptoms
The door takes about two seconds to open, the automatic window raise does not work and, with repeated opening requests, the window makes several short drops. On the GranCabrio the soft top also cannot be operated and a message appears on the dashboard.
Possible cause described
The door window loses its calibration (code B2577 or A57700). Maserati is preparing a software update for the end of 2026 and, meanwhile, gives a calibration procedure (bulletin MTB 26-15).
Check for the garage
Calibrate the window with the door closed: with the ignition on, lower it fully and hold the switch down for 3–5 seconds; then raise it fully and hold the switch up for 3–5 seconds. If that does not fix it, go to the dealer.
Cost cited in the source
No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.