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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> DTC P206B-P206D: Reductant Quality Sensor Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify the scan tool parameter: Reductant Concentration = The value should not spike or drop out.

    Perform the action while monitoring the parameter:

    • Wiggle the harness and connector: A39 Reductant Tank
    • Wiggle the harness and connector: K115 Reductant Control Module
    • If the value spikes or drops out 

      Repair as necessary - Wiring/Terminal (s)/Electrical Connector (s)

    • Go to next step: If the value does not spike or drop out 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  4. All OK.
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