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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 (HVAC - Automatic) >> Diagnostic Information and Procedures >> DTC P0535, P0537, P0538, or P153B (LF4) >> Diagnostic Aids

Diagnostic Aids

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DTC P153B may be caused by an inaccurate value from either the Outside Air Temperature or Intake Air Temperature sensors.

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