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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 398 (Engine Controls - Self Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P0140: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 2 & DTC P0160: Ho2S Circuit - Insufficient Activity - Bank 2, Sensor 2 >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: DTC P0140 & P0160: HO2S Circuit - Insufficient Activity - Bank 1 & 2, Sensor 2 (Steps 1-8)
G00239628Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0140 & P0160: HO2S Circuit - Insufficient Activity - Bank 1 & 2, Sensor 2 (Steps 9-17)
G00239629Courtesy of GENERAL MOTORS CORP.
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