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P1133 Diagnostic Trouble Code Discussion for May 2008

Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching

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Trouble Ticket Help Requests for DTC P1133
Help Request Posted
1997 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5277V
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Slow Response. ... graphing scanner. O2 volts would not go below 300mv or above 700 mv while cruising but will go to 900mv under full throttle instantly and down below 100 mv on decel. Even on a high idle the range is narrow. P1133 returned on first road test. Could not find...
May 21, 2008