Diagnostic Aids

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

This DTC may set due to an incorrect manifold absolute pressure (MAP)/BARO value caused by a faulty MAP sensor. Before replacing any component ensure that this condition does not exist.
The barometric (BARO) pressure value is initially based on the MAP sensor value at key ON. The BARO value is used to calculate the predicted AIR pressure sensor value.
An intermittent malfunction may be caused by a fault in an AIR pressure sensor electrical circuits. Inspect the wiring harness and components for an intermittent condition. Refer to Testing for Intermittent Conditions and Poor Connections .
If the DTC cannot be duplicated, the information included in the Freeze Frame can be useful in determining vehicle operating conditions when the DTC was first set.