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Circuit/System Verification

  1. Ignition ON, observe the DTC information with a scan tool. Verify that DTCs P0106, P0107, P0236, P0237, P0238, P2227, P2228, P2229, or P2230, are not set.
  2. Ignition ON, observe the scan tool MAP Sensor, BARO Sensor, and Turbo Boost Sensor parameters. Compare the parameters to the Altitude Versus Barometric Pressure table.
    • If one or more sensor parameters are out of range, refer to the appropriate diagnostic for more information.
    • DTC P2227: Barometric Pressure (BARO) Sensor Performance
    • DTC P0106: Manifold Absolute Pressure (MAP) Sensor Performance
    • DTC P0236: Turbocharger Boost System Performance
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