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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P1052, P20BD-P20BF, P20C0, P248C, or P248D >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.

Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector : E52 Reductant Line Heater
  3. Test for 2 to 4 ohms between the test points : Control circuit terminal 1 & Control circuit terminal 2
    • If not between 2 and 4 ohms 

      Replace the component : E52 Reductant Line Heater

    • Go to next step : If between 2 and 4 ohms 
  4. Test for infinite resistance between the test points : Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component : E52 Reductant Line Heater

    • Go to next step : If infinite resistance 
  5. All OK.
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