Possible Causes

Fuel tank filler pipe vent tube, if equipped
Fuel tank filler pipe
Evaporative emission (EVAP) system
Fuel tank level shut-off valve (part of the fuel tank)
Fuel tank
Bent, kinked or damaged fuel tank filler pipe
Bent, kinked or damaged fuel tank filler pipe vent tube (if equipped)
Incorrect routing of the fuel tank filler pipe
Incorrect routing of the fuel tank filler pipe vent tube (if equipped)
Incorrect position of fuel tank filler pipe clamps
Incorrect position of fuel tank filler pipe vent tube clamps (if equipped)
Fuel tank mounted vapor tubes bent or damaged
Evaporative emission (EVAP) system tubes or hoses bent or damaged
Accident damage to the fuel tank
Accident damage to the vehicle effecting the fuel tank filler pipe-to-body connection
Unauthorized modifications and/or alterations to the vehicle
EVAP system fresh air tube plugged (dirt, spider webbing)

HINT

An FTP voltage PID reading greater than 4.85 volts in key ON, engine OFF or key ON, engine running indicates a concern is present.

DIAGNOSTIC PROCEDURE CHART

PINPOINT TEST 4		SLOW TO FILL
STEP	INSPECTION		ACTION
1	CARRY OUT INSPECTION AND VERIFICATION Carry out inspection and verification. Was the cause of the concern found?	Yes	REPAIR or INSTALL new components to correct the concern.
1		No	GO to the next step.
2	CHECK THE SYSTEM FOR ANY EVAPORATIVE EMISSION (EVAP) DTCs Connect the scan tool. Check the system for any of the following EVAP DTCs: P0446, P0451, P0452, P0453, P0454, P1443, P1450, P1451 and P260F. Are any of these DTCs present?	Yes	For DTC P0446, see EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID MALFUNCTION . For DTC P0451 and/or P0461 are present, See TEST 3: INTERMITTENT . Otherwise, REPAIR all other DTCs present and DISREGARD DTC P0451 and/or DTC P0461. For DTC P0452, see DTC P0452: FUEL TANK PRESSURE (FTP) SENSOR MALFUNCTION . For DTC P0453, see DTC P0453: FUEL TANK PRESSURE (FTP) SENSOR MALFUNCTION . For DTC P0454, see DTC P0451: EVAP SYSTEM MALFUNCTION . For DTC P1443, see DTCS P0455 AND P1443: EVAPORATIVE EMISSION (EVAP) SYSTEM MALFUNCTION . For DTC P1450, see EVAPORATIVE EMISSION (EVAP) MONITOR AND SYSTEM . For DTC P1451, see CANISTER VENT (CV) SOLENOID MALFUNCTION . For DTC P260F, see EVAPORATIVE EMISSION (EVAP) MONITOR AND SYSTEM MALFUNCTION .
2		No	GO to the next step.
3	MONITOR THE FUEL TANK PRESSURE (FTP) WHILE FILLING THE FUEL TANK Monitor the FTP reference value while filling the fuel tank. See PID/DATA MONITOR REFERENCE VALUE (2.5L) or PID/DATA MONITOR REFERENCE VALUE (3.0L [4V]) . Is FTP within specification?	Yes	GO to step 5.
3		No	GO to the next step.
4	MONITOR THE FTP WHILE FILLING THE FUEL TANK WITH THE EVAP SYSTEM DISCONNECTED Disconnect the fuel tank-to-EVAP canister quick connect coupling at the EVAP canister. See QUICK RELEASE COUPLING DOUBLE LOCKING 01-14A-6. Monitor the FTP reference value while filling the fuel tank. See PID/DATA MONITOR REFERENCE VALUE (2.5L) or PID/DATA MONITOR REFERENCE VALUE (3.0L [4V]) . Is FTP within specification?	Yes	INSPECT the EVAP system for blockage or restrictions. REPAIR the blockage or restriction. If the blockage or restriction cannot be repaired, INSTALL new EVAP system components.
4		No	GO to the next step.
5	CHECK THE FUEL TANK FILLER PIPE ASSEMBLY FOR BLOCKAGE OR RESTRICTION Remove the fuel tank filler pipe assembly. See FUEL TANK FILLER PIPE REMOVAL/INSTALLATION . Inspect the fuel tank filler pipe and fuel tank filler pipe vent tube (if equipped) for a blockage or restriction. Is the fuel tank filler pipe or fuel tank filler pipe vent tube (if equipped) blocked or restricted?	Yes	If possible, REPAIR the blockage or restriction. If the blockage or restriction cannot be repaired, INSTALL a new fuel tank filler pipe or fuel tank filler pipe vent tube (if equipped), see FUEL TANK FILLER PIPE REMOVAL/INSTALLATION .
5		No	GO to the next step.
6	CHECK THE FUEL TANK LEVEL SHUTOFF VALVE Inspect the fuel tank level shutoff valve for restriction or sticking. Is the fuel tank level shutoff valve restricted or sticking?	Yes	If possible, REPAIR the restriction. If restriction cannot be repaired, INSTALL a new fuel tank. See FUEL TANK REMOVAL/INSTALLATION .
6		No	INSTALL a new fuel tank. See FUEL TANK REMOVAL/INSTALLATION .