Posts Tagged: Jeep P0456

Jeep P0456, P0457 Codes — Most Common Causes

Jeep P0456, P0457 — What to check first if you get these codes A Jeep P0456 is defined as an EVAP PURGE SYSTEM SMALL LEAK, while a Jeep P0457 is defined as a LOOSE FUEL CAP. Step by step procedure to diagnose Jeep P0456 trouble codes Check for leak in the purge hose and purge valve A stuck purge valve is a common problem on Jeeps and the cause can be a bad valve or a leaking charcoal canister that spews charcoal particles into the purge hose. Start by removing … Read More