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P1133 Diagnostic Trouble Code Discussion for July 2005

Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching

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Trouble Ticket Help Requests for DTC P1133
Help Request Posted
1999 Chevrolet Tahoe LS 5.7L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GNEK13R4X
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. Hello Techs, having a hard time with this one codes po1133 b1 s1 no activity code po1153 b2s1 no activity this is verified on genysis and snap on scanners have checked usual culprits no restrictions in air cleaner, fuel pressure and volume are fine no vac leak...
July 26, 2005
1998 Pontiac Sunfire SE 2.4L Excessive Emissions, Cuts out, Stall, MIL Lamp on VIN: 4G2JB32T1W
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. Car came from other shop- codes PO172 and PO1133 set- new O2 front installed Checked frezze frame- LT -21%/ ST -25%/ Map 45 kPa/ Cal. Air flow 16.59 g/s/ 60 mph/ ECT 183F/ Fuel injector pulze 1.6 m/s fuel pressure runing 40 psi./ engine off holds at 28 psi. co...
July 31, 2005