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Home >> Buick >> 2003 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0134: Ho2S Circuit Insufficient Activity - Sensor 1 >> Diagnostic Procedures

Diagnostic Procedures

Fig 1: DTC P0134: HO2S Circuit Insufficient Activity - Sensor 1 (Steps 1-6)
G00250355Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0134: HO2S Circuit Insufficient Activity - Sensor 1 (Steps 7-14)
G00250356Courtesy of GENERAL MOTORS CORP.
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