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Home >> Cadillac >> 2003 >> CTS Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0102: Mass Airflow Sensor Circuit Low Frequency >> Test Description

Test Description

The numbers below refer to the step number in the diagnostic procedures.

  1. 4

    This step will determine if any mechanical faults have caused this DTC to set.

  2. 9

    Disconnecting the harness connector of the APP sensor will determine if the sensor is affecting the 5-volt reference circuit of the MAF sensor.

  3. 10

    Disconnecting the harness connector of the A/C sensor will determine if the sensor is affecting the 5-volt reference circuit of the MAF sensor.
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