P0455 Code - System Gross Leak Evaporative Emission

The P0455 code in the OBD-II system refers to a "Large Evaporative Emissions Leak." It indicates that there is a significant leak in the vehicle's evaporative emissions control system.

The evaporative emissions control system prevents fuel vapors from escaping into the atmosphere. A large leak can occur due to various reasons, such as a loose or damaged gas cap, a cracked or disconnected vacuum hose, a faulty purge valve, or a leak in the fuel tank or fuel system.

• Hummer H3

See also

• OBD, OBD scanners, OBD2, OBD codes, ECU, PO455, MaxiSys, DTC, iCarsoft, Carly, Autel, Launch, Porsche PIWIS, Topdon, autocodes.com, Dot.report, PCM