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Possible Causes

Possible Causes 
DTC IS ACTIVE
FUEL TANK DAMAGE
FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND
FUEL LEVEL SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(Z965) GROUND CIRCUIT OPEN OF HIGH RESISTANCE
INTERNAL DAMAGE TO FUEL TANK OR SIPHON HOSE
FUEL LEVEL SENSOR

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .