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Home >> Cadillac >> 2003 >> Seville SLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0102: MAF Sensor Circuit - Low Frequency >> Diagnostic Aids
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Diagnostic Aids

Inspect for the following conditions:

  1. Inspect the harness of the MAF sensor to verify that it is not routed too close to the following components:
    • The ignition coil cassette.
    • Any solenoids.
    • Any relays.
    • Any motors.
  2. Inspect for any contamination or debris on the sensing elements of the MAF sensor.
  3. A Wide Open Throttle (WOT) acceleration from a stop should cause the MAF SENSOR parameter on the scan tool to increase rapidly. This increase should be from 3-10 g/s at idle to 190 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.
  4. A high resistance of 15 ohms or more on the ground circuit of the MAF sensor may cause this DTC to set. A high resistance may cause a driveability concern before this DTC sets.
  5. A high resistance of 15 ohms or more on the ignition 1 voltage circuit may cause this DTC to set. A high resistance may cause a driveability concern before this DTC sets.

Condition may be related to aftermarket accessories. If the condition is intermittent, see INTERMITTENT CONDITIONS  under SELF-DIAGNOSTIC SYSTEM.

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