996TT OBD II DME 7.8 WKD 484 120 PDF

A technical documentation that addresses troubleshooting and diagnosis of the P0442 fault code related to the fuel tank ventilation system in specific vehicles. It outlines the required conditions for the system check, possible fault causes, and step-by-step instructions for diagnosing and resolving the issue. The documentation includes detailed procedure instructions and visual diagrams to assist technicians in correctly identifying and fixing leaks or faults in the fuel system components, such as the tank cap seal and EVAP canister purge valve.