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Home >> Saturn >> 2003 >> LW200 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0105: Map Sensor Circuit Range/Performance >> Test Description
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Test Description

The numbers below refer to the step numbers on the diagnostic procedures.

  1. 2  - If any of these DTCs are set, this indicates a failed component or a shorted circuit affecting the 5-volt reference system voltage.
  2. 9  - While starting the engine, the MAP sensor should detect any changes in manifold pressure. This test is to determine if the sensor is stuck at a value.
  3. 10  - A normal MAP sensor will react quickly to the throttle changes. A MAP sensor should not appear to be lazy or catch up with the throttle movements.
  4. 18  - The measurement noted in this step will be used in subsequent steps if the measurement does not exceed the specified value.

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