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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine Control System - 3.8L - DTC P0451 To DTC P2120) >> DTC P0641 or P0651 >> Circuit/System Verification >> P0641

Circuit/System Verification: P0641

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.

Observe the MAP sensor voltage parameter with a scan tool with the ignition ON and the engine OFF. The scan tool should display 3.6-4.8 volts for a normally operating system.

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