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Home >> Chevrolet >> 2019 >> Cruze Premier, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P0016-P054F)) >> Diagnostic Information and Procedures >> DTC P0171 or P0172 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Verify DTC P0101, P0102, P0103, P014C, P0201, P0202, P0203, P0204, P0205, P0206, P0207, or P0208 is not set.
    • Go to next step: If none of the DTCs are set  .
  2. Verify the scan tool MAF Sensor parameter is between 5 and 40 g/s.
    • Go to next step: If between 5 and 40 g/s 
  3. Verify there are no exhaust system leaks. Refer to Exhaust Leakage .
    • If exhaust system leaks were found 

      Repair as necessary.

    • Go to next step: If no exhaust system leaks were found 
  4. Replace the B195A Nitrogen Oxides Sensor 1.