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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 2.0L (LUZ) Diesel - DTC P0016 To DTC P0406) >> Diagnostic Information and Procedures >> DTC P0403, P0489, P0490, P1407, P140D, P140E or P140F: Exhaust Gas Recirculation (EGR) Control Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON
  2. Verify the EGR Position Sensor percentage parameter remains within 5 % of the EGR Valve Commanded State when commanding the EGR valve between 0-100% with a scan tool.
    NOTE: When using an EGR device control, Engine Reduced Power and Clean Exhaust Filter messages may occur after a short delay when commanding large EGR positions. The messages are a result of ECM protecting hardware during device control mode. No DTCs will be stored and the Diesel Particulate Filter does not need to be service cleaned. Exiting device control will restore normal function.
    • If within 5 % 
  3. Operate the vehicle within the Conditions for Running the DTCs. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify a DTC does not set.
    • If a DTC does not set 
  5. All OK.
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