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Home >> Chevrolet >> 2003 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline >> Diagnostic Tests >> DTC P0141: Ho2S Heater Circuit - Bank 1, Sensor 2 & DTC P0161: Ho2S Heater Circuit - Bank 2, Sensor 2 >> Diagnostic Procedure

Diagnostic Procedure

Fig 1: DTC P0141: HO2S Heater Circuit - Bank 1, Sensor 2 & DTC P0161: HO2S Heater Circuit - Bank 2, Sensor 2 (Steps 1-8)
G00241350Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0141: HO2S Heater Circuit - Bank 1, Sensor 2 & DTC P0161: HO2S Heater Circuit - Bank 2, Sensor 2 (Steps 9-22)
G00241351Courtesy of GENERAL MOTORS CORP.