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Symptom: P0461-FUEL LEVEL SENSOR #1 PERFORMANCE When Monitored and Set Condition: P0461-FUEL LEVEL SENSOR #1 PERFORMANCE When Monitored: TEST #1: With the ignition on, the fuel level is compared to the previous key down after a 20 second delay. TEST #2: The PCM monitor the fuel level at Set Condition: TEST #1: If the PCM does not see a difference in fuel level of greater than 0.1 volt the test will fail. TEST #2: If the PCM does not see a change in the fuel level of POSSIBLE CAUSES GOOD TRIP EQUAL TO ZERO VISUALLY INSPECT FUEL TANK (G4) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND (G4) FUEL LEVEL SIGNAL CIRCUIT OPEN (Z2) GROUND CIRCUIT OPEN INTERNAL INSPECTION OF THE FUEL TANK FUEL LEVEL SENSOR TEST ACTION APPLICABILITY 1 NOTE: Diagnose P0462 or P0463 first, if set along with P0461. t, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 Visually inspect the Fuel Tank for damage that may restrict the Fuel Sending Unit All Yes → Go To 3 No → Replace the Fuel Tank as necessary. Perform POWERTRAIN VERIFICATION TEST VER - 5. 181 DRIVEABILITY - NGC |