P1133 = HO2 sensor 1 insufficient switching.
Possible causes,
An exhaust leak close to the O2 sensor,
Silicone gasket material contaminated O2 sensor,
Silicone in the fuel,
Leaded fuel added to the fuel tank,
Damaged wiring,
Engine oil consumption,
Engine coolant consumption,
Faulty O2 sensor.
Trouble code P1133 means: HO2S insufficient switching
change your o2 sensor
Trouble code P1133 means:HO2S insufficient switching
Trouble code P1133 means: HO2S insufficient switching
I've got a better question, why is this question in the Chevy venture forum ?
HO2S Insufficient Switching Sensor 1
Trouble code P1133 means: HO2S-11 (Bank 1 Sensor 1) Insufficient Switching
Trouble code P1133 means: HO2S-11 (Bank 1 Sensor 1) Insufficient Switching
You either have a bad oxygen sensor or a vacuum leak. Code P1133 indicates a faulty heated oxygen sensor but a vacuum leak could also cause this code.
Trouble code P1133 means: Air-Fuel Sensor Circuit Response Malfunction Trouble code P1135 means: Air-Fuel Sensor Heater Circuit Response Malfunction
Its the Primary o2 Sensor (pre-cat), needs to be replaced
what is p1133