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Home >> Buick >> 2006 >> Lucerne CXS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.6L - DTC P1400 To DTC P2444 >> DTC P2433 >> Circuit/System Verification
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Circuit/System Verification

  1. Engine running, observe that the AIR Pressure Sensor parameter approximately equals BARO.
  2. Engine running, enable the AIR pump relay with a scan tool and observe that the AIR Pressure Sensor parameter equals approximately 10-20 kPa above BARO.