For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2000 🢒 DeVille 🢒 Engine 🢒 Engine Controls - 4.6L 🢒 DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage

DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage for Cadillac DeVille 2000

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Circuit Description

The manifold absolute pressure (MAP) sensor responds to changes in intake manifold pressure. The PCM supplies a 5 volt reference and a ground for the MAP sensor. The MAP sensor provides a signal to the PCM relative to the pressure changes in the manifold. The MAP sensor signal voltage to the PCM varies from below 2 volts at idle (low manifold absolute pressure - high vacuum) to above 4 volts with the key ON, engine not running or at wide-open throttle (high manifold absolute pressure - low vacuum). The PCM monitors the MAP signals for voltages outside the normal range of the MAP sensor. If the PCM detects a MAP sensor voltage that is intermittently high, DTC P1106 will set.

Conditions for Running the DTC

•	No TP sensor DTCs are set

•	The engine has been running for a length of time that is determined by startup coolant temperature. The length of time ranges from 3 minutes at less than -30°C (-22°F) to less than a second at more than 30°C (86°F).

•	The throttle angle is less than 89 percent when engine speed is less than 1000 RPM.

•	The throttle angle is less than 97 percent when engine speed in above 1000 RPM.

Conditions for Setting the DTC

•	The MAP sensor signal voltage is more than 4.9 volts.

•	The condition exists for less than 1 second.

Action Taken When the DTC Sets

•	The PCM will illuminate the malfunction indicator lamp (MIL) the first time the malfunction is detected.

•	The PCM will store the conditions present when the DTC set as Freeze Frame and Fail Records data.

Conditions for Clearing the MIL/DTC

•	The PCM will turn the MIL OFF during the third consecutive trip in which the diagnostic runs and passes.

•	The History DTC will clear after 40 consecutive warm-up cycles have occured without a malfunction.

•	The DTC can be cleared by using the scan tool Clear DTC Information function.

Diagnostic Aids

If the condition is intermittent, refer to Intermittent Conditions in Symptoms.