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Home >> Chevrolet >> 2018 >> Trax Premier, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Engine Controls And Fuel - 1.4L (LE2) - Diagnostic Information And Procedures (P0010-P06B6)) >> Diagnostic Information and Procedures >> DTC P00C7 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON/Vehicle in Service mode.
  2. Verify that DTCs P0106, P0107, P0236, P0237, P0238, P2227, P2228, P2229 or P2230 are not set.
    • Go to next step: If none of the DTCs is set 
  3. Verify none of the following conditions exist:
    • The air intake duct system for loose connecting clamps, cracks, or other damage
    • A damaged Q38 Throttle Body blade or shaft
    • Splits, kinks, or improper connections at the vacuum hoses
    • Faulty positive crankcase ventilation system operation
    • Carbon deposits on the throttle blade.
    • Vacuum leaks at the intake manifold, Q38 Throttle Body, Q17 Fuel Injector O-rings, and B111B Turbocharger Boost and Intake Air Temperature Sensor.
    • If a condition exists 

      Repair as necessary.

    • Go to next step: If none of the conditions exist 
  4. Verify the following scan tool parameters are within range of the Altitude vs. Barometric Pressure table. Refer to: Altitude Versus Barometric Pressure table.
    • BARO Sensor
    • MAP Sensor
    • Turbocharger Boost Sensor
    • If a sensor parameter is not within range 

      Refer to the appropriate diagnostic below for further diagnosis.

    • Barometric Pressure (BARO) Sensor. Refer to: DTC P2227-P2230
    • Manifold Absolute Pressure (MAP) Sensor. Refer to: DTC P0106 
    • Turbocharger Boost Pressure Sensor. Refer to: DTC P0236 
    • Go to next step: If all sensor parameters are within range 
  5. All OK
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