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Home >> Chevrolet >> 2019 >> Cruze Premier, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P057B-P208D)) >> Diagnostic Information and Procedures >> DTC P144E or P144F >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition On.
  2. Verify DTC P00C7, P00E9, P00EA-P00EC, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0119, P0128, P0201-P0208, P020A-P020F, P0216, P021A, P021B, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P02EE, P02EF, P02F0-P02F5, P0405, P0406, P049D, P062B, P062D, P0772, P0773, P111E, P113C, P118F, P1248, P1249, P124A-P124F, P126A, P2032, P2033, P2084, P2085, P2147, P2148, P2150, P2151, P2153, P2154, P2156, or P2157 is not set,
    • Go to next step: If a DTC is not set 
  3. Verify that the resistance of B131 Exhaust Gas Temperature Sensor 1 and 2 is within the value specified in Temperature Versus Resistance - Exhaust Temperature Sensor
    • If not within the specified range 

      Replace the appropriate B131 Exhaust Gas Temperature Sensor

    • Go to next step: If within the specified range 
  4. Verify the following conditions do not exist:
    • Exhaust system leaks - Refer to Exhaust Leakage .
    • A loose or disconnected charge air cooler hose or pipe
    • Loose or missing induction or exhaust system components
    • If a condition is found 

      Repair as necessary.

    • Go to next step: If no condition is found 
  5. Perform the Diesel Particulate Filter Service Regeneration
  6. Verify that Exhaust Gas Temperature Sensor 2 reads at least 100°C (180°F) warmer than EGT Sensor 1 during regeneration.
    • If EGT Sensor 2 is less than 100°C (180°F) warmer than EGT Sensor 1 

      Replace the diesel oxidation catalyst

    • Go to next step: If EGT Sensor 2 is at least 100°C (180°F) warmer than EGT Sensor 1 
  7. All OK.