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DTC Descriptor

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic procedure supports the following DTC:

DTC P2A00 HO2S Circuit Closed Loop (CL) Performance Bank 1 Sensor 1

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