Bank 1 is the bank of cylinders containing cylinder 1, which varies from engine to engine among the many V6, V8, & Boxer engines. Sensor 1 is always the "upstream" or Pre catalyst sensor. On most four cylinder or other inline engine configurations, there is only one bank. Sensor 2 would be downstream or after the catalytic converter. Diagnostic Trouble Code (DTC) p0133 refers to Bank1, Sensor1 being slow to respond. This may point to a failing sensor, or simply an intake or exhaust leak. Any gas leak can lead to unmeterd Oxygen in the system. This code may also be caused by fault wiring or connection on the sensor circuit.
Trouble code P0133 means:O2 sensor circuit slow responce (Bank 1 Sensor 1)
Replace the O2 sensor. Bank 1 sensor 1 means it is the sensor on the side of the number 1 cylinder and before the catalytic converter.
O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
Upstream Oxygen Sensor Circuit Slow Response (Bank 1)
For 1996 and newer Trouble code P0133 means:O2 sensor circuit slow response (bank 1 sensor 1) Bank 1 = Exhaust side with #1 cylinder Sensor 1 = Sensor before catalytic converter
Trouble code P0133 means: O2 sensor circuit,slow response (bank 1,sensor 1)
P0133
Trouble code P0125 means: Insufficient Coolant Temp For Closed Loop Fuel Control Trouble code P0130 means: O2 Circuit (Bank 1, Sensor 1) Trouble code P0133 means: O2 Circuit Slow Response (Bank 1, Sensor 1)
bank 1 is always the head with the number 1 spark plug and the number 1 sensor is always in front of the converters closest to the motor
P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) does not necessarily mean the O2 sensor was bad, and for sure does not mean the catalatic conveter was bad. Stop throwing parts at this problem and take it to a professional, before you replace any more unnessary parts. You would be money ahead if you had done that is the first place.
Bank 1 sensor 1 slow response.
P0133 - upstream heated O2 sensor circuit slow response ( Bank 1 ) Bank 1 is the passenger side of your engine Sensor 1 - is in your exhaust pipe before the exhaust enters the catalytic converter ( upstream )