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P1133 Diagnostic Trouble Code Discussion for April 2007

Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching


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Trouble Ticket Help Requests for DTC P1133
Help Request Posted
2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Hesitation VIN: 1GCEC19T21
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... hesitation/stumble when cold. Overnight or 3 hour-plus sit. No SES lite. Checked codes, did have P1133 and P1153 in memory. Checked MAF sensor (even swapped with new one) and no diff. Throttle body was clean. Fuel pressure good. Air filter good and inlet c...
April 05, 2007
2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Hesitation VIN: 1GCEC19T21
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... hesitation/stumble when cold. Overnight or 3 hour-plus sit. No SES lite. Checked codes, did have P1133 and P1153 in memory. Checked MAF sensor (even swapped with new one) and no diff. Throttle body was clean. Fuel pressure good. Air filter good and inlet c...
April 05, 2007