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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P0016 - P049D)) >> Diagnostic Information And Procedures >> DTC P0401 Or P0402: Exhaust Gas Recirculation (EGR) Flow Insufficient/Excessive >> Component Testing

Component Testing

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

Perform the Circuit/System Testing before proceeding with the Component Testing.

  1. Ignition Off.
  2. Remove the Q14 Exhaust Gas Recirculation Valve. Refer to Exhaust Gas Recirculation Valve Replacement .
  3. Verify the conditions listed below do not exist:
    • Sticking, binding, or frozen EGR valve
    • Leaks or restrictions in the EGR valve body and EGR ports and passages
    • Coking, soot build up, debris or damage that can cause the EGR valve to stick partially open or closed
    • If a condition is found 

      Repair or replace the component as necessary.

    • Go to next step: If none of the conditions exist 
  4. All OK.
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