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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Instrument Panel System Displays & Gages) >> Diagnostic Information and Procedures >> DTC P0462 (2.8L, 3.0L, 3.2L and 3.6L Engines) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the fuel level sensor.
  2. Ignition ON, the scan tool installed, verify the Fuel Level parameter is 4 percent or less.
    • If the Fuel Level parameter indicates a value greater than 4 percent, test the fuel level sensor signal circuit terminal B for a short to ground. If the fuel level sensor circuit tests normal, replace the ECM.
  3. If all circuits test normal, perform the fuel level sensor component test before replacing the fuel level sensor.
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