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P1133 Diagnostic Trouble Code Discussion for October 2007

Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching

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Trouble Ticket Help Requests for DTC P1133
Help Request Posted
1997 Chevrolet C1500 Suburban 5.7L MIL Lamp on VIN: 3GNEC16R2V
P1133: Heated Oxygen Sensor (Bank Sensor 1) Insufficient Switching. First code in system was the P1133. replaced bk 1 sensor1. After drive cycle,second time of driving lite came on with code P1153 in system. Changed bank 2 sensor 1. Test drive and code P1133 came back. Now has PO133,P1133,P1153. Computer has latest update. Che...
October 31, 2007