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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISELECTRICALINSTRUMENT PANEL SYSTEM DISPLAYS, GAUGES AND CONSOLEDIAGNOSTIC INFORMATION AND PROCEDURESDTC P0462 (2.4L)CIRCUIT/SYSTEM TESTING
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Circuit/System Testing

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Testing
  1. With the ignition OFF, disconnect C305.
  2. With the ignition ON, install a scan tool and observe the Fuel Tank Level Remaining parameter in the ECM EVAP Data List.
    • If the Fuel Tank Level Remaining parameter indicates a value less than 4 percent, check the signal circuit of the fuel level sensor for a short to ground between C305 and the fuel level sensor.
  • If the fuel level sensor circuit tests normal between C305 and the fuel level sensor, replace the fuel level sensor.
  • If the Fuel Tank Level Remaining parameter indicates a value greater than 4 percent, check the signal circuit of the fuel level sensor circuit for a short to ground between C305 and the ECM.
  • If the fuel level sensor circuit tests normal between C305 and the ECM, replace the ECM
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.