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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0443 To DTC P3452 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Proactive Alert Identifier ECF001 >> Diagnostic Fault Information

Diagnostic Fault Information

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Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Control P0231 ECF002 P0232 ECF001
Low Reference - ECF002 - ECF001
Mechanical Condition

Component Proactive Alert Identifier Condition
G12 Fuel Pump ECF001
  • Contaminated or poor quality fuel.
  • Contamination of the fuel pump fuel strainer.
  • Worn - G12 Fuel Pump
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