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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Controls - Self Diagnostics - 4.7L) >> Diagnostic Tests >> DTC P0461: Fuel Level Sensor #1 Performance >> Testing

DTC P0461: Fuel Level Sensor #1 Performance: Testing

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Diagnose DTC P0462: FUEL LEVEL SENSOR #1 LOW  or DTC P0463: FUEL LEVEL SENSOR #1 HIGH  first, if set along with P0461. Inspect the fuel pump module harness connector for any corrosion or damage. Ignition on, engine not running. With the DRBIII® scan tool, read DTCs and record the related freeze frame data. Is the Good Trip Counter displayed and equal to zero? If yes, go to next step. If no, see INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Visually inspect the fuel tank for damage that may restrict the fuel sending unit float from moving. Is the fuel tank OK? If yes, go to next step. If no, replace the fuel tank as necessary.
    3. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool (8815) to perform diagnosis.
  3. Turn the ignition off. Disconnect the fuel pump module harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K226) fuel level signal circuit from the fuel pump module harness connector to the appropriate terminal of Miller Special Tool (8815). Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K226) fuel level signal circuit.
  4. Measure the resistance between ground and the (K226) fuel level signal circuit at the fuel pump module harness connector. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K226) fuel level signal circuit. If no, go to next step.
    5. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool (8815) to perform diagnosis.
  5. Measure the resistance of the (K4) sensor ground circuit from the fuel pump module harness connector to the appropriate terminal of Miller Special Tool (8815). Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K4) sensor ground circuit.
    6. WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE .
  6. Remove the fuel tank. Remove the fuel pump module. Visually inspect the inside of the fuel tank for any obstructions or deformities. Inspect the fuel pump module float arm for damage. Were any problems found? If yes, repair or replace as necessary. If no, go to next step.
  7. If there are no possible causes remaining, replace the fuel level sensor.
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