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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 P0462: Fuel Level Sensor #1 Low >> Testing

DTC P0462: Fuel Level Sensor #1 Low: 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. Ignition on, engine not running. With the DRBIII® scan tool, read DTCs and record the related freeze frame data. With the DRBIII® scan tool, read the fuel level sensor voltage. Is the fuel level sensor voltage below 0.4 of a volt? If yes, go to next step. If no, see INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn the ignition off. Disconnect the fuel pump module harness connector. Ignition on, engine not running. With the DRBIII® scan tool, read the fuel level sensor voltage. Did the fuel level sensor voltage change from below 0.4 of a volt to above 4.0 volts? If yes, replace the fuel level sensor. If no, go to next step.
  3. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between ground and the (K226) fuel level signal circuit at the fuel level sensor 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.
  4. Measure the resistance between the (K226) fuel level signal circuit and the (K4) sensor ground circuit at the fuel pump module harness connector. Is the resistance below 5.0 ohms? If yes, repair the short between the (K4) sensor ground and the (K226) fuel level signal circuit. If no, go to next step.
    5. NOTE: Before continuing, disconnect the PCM harness connectors and check the related wiring terminals for corrosion, damage or terminal push out. Repair as necessary.
  5. Using the wiring diagram as a guide, inspect the wire harness and connectors. Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect both the component and the PCM connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See PROGRAMMING .
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