Automotive diagnostics for Peugeot and Citroën (PSA) vehicles have evolved significantly over the last two decades. Before the modern, cloud-based Diagbox suite became the standard, technicians and enthusiasts relied on two distinct software programs: and Lexia 3 .
Lexia, in particular, is a software tool used for diagnostics, maintenance, and repair of vehicles. It offers comprehensive capabilities for troubleshooting and resolving issues, making it an indispensable asset for automotive technicians. The software supports various vehicle systems, including engine, transmission, brakes, and electrical systems, providing detailed diagnostic information and repair recommendations. PP2000 - LEXIA OLD versions - MHH AUTO - Page 1
As discussed in this MHH Auto Chinese clone thread , older Lexia 3 clones (Revision B or C) might need their firmware downgraded using PSA Interface Checker to 4.2.2 or 4.3.0 to work consistently with older software versions. This public link is valid for 7 days
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Re: lexia / diagbox questions ... This is essential and most be done each time the oil is replaced... As for your other questions: French Car Forum
Connect your interface to the car's OBD port and turn the ignition on. Launch the software. You should see the "Vehicle identification" screen without any "Communication error."
