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P1153 Diagnostic Trouble Code Discussion for November 2008

Heated Oxygen Sensor (Bank 2 Sensor 1) Insufficient Switching

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Trouble Ticket Help Requests for DTC P1153
Help Request Posted
2000 Chevrolet Blazer LS 4.3L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1GNDT13W0Y
P1153: Heated Oxygen Sensor (Bank 2 Sensor 1) Transition Time Ratio. ... and p0175 running rich. Also 02 sensor codes p1133 and p1153. Checked fuel pressure, 74 psi when running seemed high to me. Replaced regulator because of high failure rate. retested fuel pr...
November 04, 2008