ho trovato questa lista di protocolli compatibili al 100% dall' ELM327 1.3a
The interface is the most powerful member of the series and is compatible with a wider range of protocols than before:
SAE J1850 PWM (41.6 k baud)
SAE J1850 VPW (10.4 k baud)
ISO 9141-2 (5 baud init, 10.4 k baud)
ISO 14230-4 KWP (5 baud init, 10.4 k baud)
ISO 14230-4 KWP (fast init, 10.4 k baud)
ISO 15765-4 CAN (11 bit ID, 500 k baud)
ISO 15765-4 CAN (29 bit ID, 500 k baud)
ISO 15765-4 CAN (11 bit ID, 250 k baud)
ISO 15765-4 CAN (29 bit ID, 250 k baud)
ISO 15765-4 CAN (29/11bit ID, arbitrary baud rate)
SAE J1939
Compatible with the following vehicles:
cars in Europe market from 2001.1
Diesel cars in Europe from year 2004
Cars (Domestic & Import) in the USA market from 1996
Light trucks (Domestic & Import) from 1996