LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Control System & Fuel System - 3.6L - DTC P0008 To DTC P0333) >> DTC P0137, P0138, or P0140 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

The following table illustrates the ECM connector locations:

ECM Connector Location
X2 X1
Front of Vehicle

The rear HO2S will not go into Closed Loop when the engine is idling. Once the HO2S are at operating temperature, and the vehicle is moving, the rear HO2S will go into Closed Loop.