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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0191, P0192, P127C, P128A, P128B, P16E4, or P16E5 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Connect a 3 A fused jumper wire between the test points : 5 V Reference terminal 3 & 5 V
  2. Connect a jumper wire between the test points : Low Reference terminal 1 & Ground
  3. Test for 2.5 to 4.0 V between the test points : Signal terminal 2 & Low Reference terminal 1
    • If not between 2.5 and 4.0 V 

      Replace the component : B310 Fuel Pressure/Temperature Sensor

    • Go to next step : If between 2.5 and 4.0 V 
  4. All OK.
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