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P0462, P0463 FUEL LEVEL SENSOR EC-345 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC N P O P0462, P0463 FUEL LEVEL SENSOR Component Description INFOID:0000000009886754 The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the combination meter. The combination meter sends the fuel level sensor signal to the ECM through CAN communication line. It consists of two parts, one is mechanical float and the other is vari- able resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float. On Board Diagnosis Logic INFOID:0000000009886755 NOTE: • If DTC P0462 or P0463 is displayed with DTC U0101 or U1001, first perform the trouble diagnosis for DTC U0101, U1001. Refer to . • If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to This diagnosis indicates the former, to detect open or short circuit malfunction. DTC Confirmation Procedure INFOID:0000000009886756 NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- ing the next step. Before performing the following procedure, confirm that battery voltage is more than 11V at ignition switch ON. 1. Turn ignition switch ON. 2. Wait at least 5 seconds. 3. Check 1st trip DTC. 4. If 1st trip DTC is detected, go to Diagnosis Procedure INFOID:0000000009886757 1. CHECK COMBINATION METER FUNCTION MWI-28, "CONSULT Function (METER/M&A)" OK or NG OK >> GO TO 2. NG >> Go to . 2. CHECK INTERMITTENT INCIDENT BBIA0402E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0462 Fuel level sensor circuit An excessively low voltage from the sensor is • Harness or connectors (The CAN communication line is open or • Harness or connectors (The sensor circuit is open or shorted) • Combination meter P0463 Fuel level sensor circuit An excessively high voltage from the sensor is |