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Home >> Buick >> 2018 >> Regal Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0461-P0464 >> Circuit/System Verification

Circuit/System Verification

Without UDV

  1. Ignition ON.
  2. Verify the fuel level gauge sweeps when performing the scan tool Instrument Cluster Gauge Sweep control function.
    • If the fuel level gauge does not sweep 

      Replace the P16 Instrument Cluster

    • Go to next step: If the fuel level gauge sweeps 
  3. Verify the low fuel level indicator turns ON and OFF when commanding the scan tool All Indicators control function ON and OFF.
    • If the low fuel level indicator does not turn ON and OFF 

      Replace the P16 Instrument Cluster

    • Go to next step: If the low fuel level indicator turns ON and OFF 
  4. Verify the scan tool Fuel Level Sensor parameter is between 0.5 - 3.5 V and varies with fuel level.
    • If not between 0.5 - 3.5 V or does not vary with fuel level 

      Refer to Circuit/System Testing

    • Go to next step: If between 0.5 - 3.5 V and varies with fuel level 
  5. All OK.

With UDV

  1. Ignition ON.
  2. Verify the scan tool Fuel Level Sensor parameter is between 0.5 - 3.5 V and varies with fuel level.
    • If not between 0.5 - 3.5 V or does not vary with fuel level 

      Refer to Circuit/System Testing

    • Go to next step: If between 0.5 - 3.5 V and varies with fuel level 
  3. All OK.