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P1106 just popped up.It's an intermittent high voltage to the MAP sensor..What would cause this?  Is it a vacuum leak somewhere??    Where to start looking?  02 Eldorado ESC

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more likely an issue at the sensor:

  • Faulty Manifold Absolute Pressure (MAP) sensor 
  • Manifold Absolute Pressure (MAP) sensor harness is open or shorted
  • Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection


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High voltage typically means that the circuit is either broken to the sensor or the sensor itself is open.

The feedback sent back to the pcm sees a high voltage return that is over the normal range for the sensor and that is what throws the code


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