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Home >> Buick >> 2003 >> Regal LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0140: Ho2S Circuit Insufficient Activity - Sensor 2 >> Diagnostic Procedures

Diagnostic Procedures

Fig 1: DTC P0140: HO2S Circuit Insufficient Activity - Sensor 2 (Steps 1-6)
G00250363Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0140: HO2S Circuit Insufficient Activity - Sensor 2 (Steps 7-13)
G00250364Courtesy of GENERAL MOTORS CORP.
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