Diagnostic Trouble Code
P0133
Oxygen Sensor Circuit Slow Response
Technical Description P0133
Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)
What Does This Mean P0133?
This is considered a generic powertrain DTC (code). That means it's definition is the same for all makes and models of OBD-II vehicles, however specific repair steps may vary depending on the vehicle.
This trouble code involves the front oxygen sensor on Bank 1.
This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.
This trouble code involves the front oxygen sensor on Bank 1.
This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.
Possible Causes P0133
1
The oxygen sensor is faulty
2
The wiring to the sensor is broken / frayed
3
There is an exhaust leak
Solutions & Repair Steps P0133
The simplest thing to do is to reset the code and see if it comes back.
If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:
If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions: