Diagnostic Aids

Malfunction code is set when internal pressure of fuel tank changes more than 100mm/Ag in 20 seconds, after tank and vapor line are close. Check for following possible problems:

• Fuel filler cap loose or missing.
• Fuel filler cap "O" ring missing or damaged.
• Faulty or damaged fuel filler pipe.
• Leaking, disconnected or plugged fuel vapor lines.
• Fuel in lines due to faulty rollover valve or On-board Refueling Vapor Recovery (ORVR) valve.
• Canister Close Valve (CCV) clogged, stuck open or closed.
• Improperly installed EVAP Canister Purge Solenoid Valve (PCSV).
• Purge Control Solenoid Valve (PCSV) stuck open or closed.
• Faulty Fuel Tank Pressure (FTP) sensor.
• Leaking EVAP canister or catch tank.