Error Code P0133: What It Means & What To Do?

<<See All OBD Codes

The fault code P0133 can be defined as oxygen sensor circuit slow response bank 1 sensor 1. This code would mean that the air fuel ratio in the engine is not being able to adjust automatically by the oxygen sensor signal or the engine control module the way they are actually supposed to do. Or they are not being adjusted as per the expectations when the car engine warms up or under normal engine use.

The main role of the oxygen sensor is to measure the amount of oxygen in the exhaust gas when the engine is left after the process of combustion. This information is really essential for the engine to give off the most power, and at the same time would minimize its contribution to the air pollution. If enough amount of oxygen is not present in the exhaust, then it would mean that the car engine is running too rich and a lot of amount of fuel is being used up.

What causes this problem with the O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)?

• There can be some faults in the oxygen sensor
• There can be leakage in the exhaust manifold
• Issue of engine vacuum leak
• There can be an open or short in the wiring of the oxygen sensor
• The issue of soot or oil build-up on the O2 sensor (excessive build-up will clog the ports the sensor uses to measure the air fuel ratio)
• The mass air flow sensor might be dirty
• The fuel pressure may not be correct

1. Oxygen Sensor - Do you remember when was the last time you got your car Oxygen Sensor inspected? A damaged Oxygen Sensor can cause a lot of issues like displaying P0133 code.
2. Mass Air Flow sensor - Bad Mass Air Flow sensor can cause a lot of difficulties, so why not get it replaced at time?
3. Manifold Absolute Pressure sensor - Are there some faults in your Manifold Absolute Pressure sensor? Don’t waste time and get them replaced or else P0133 code can turn up.
4. Exhaust Parts - OBD Code P0133 can appear because of faulty Exhaust parts.
5. Powertrain Control Module - P0133 code can display due to some default in the Powertrain Control Module. So, it is very important to replace the Powertrain Control Module with us at equitable prices.
6. Engine Control Module - OBD Code P0133 can flash if the engine control module is damaged. You must replace it with a brand new one online with us.
7. Fuel Pump - Did your mechanic just found out that there is some fault in the Fuel Pump? Buy top notch Fuel Pump from us at economical prices.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0133 code by mentioning some major symptoms below:

Common Symptoms

• The car engine might start stalling or misfiring
• The overall gas mileage might be poor
• There can be loss of engine power

Have a look at some ways with which you can correct the P0133 code:

• You can always replace the car oxygen sensor to fix the P0133 code
• At times the sensor itself will not be causing the code P0133, so you get other faults such as vacuum leaks, a dirty mass air flow sensor, or leaks in the exhaust system properly checked by a technician

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of connection, catalytic converter, temperature sensor and many more. Now all your problems would vanish within no time.

• The wires which are related to the O2 sensor for fraying and saturation from contaminants, such as oil should be visually inspected
• The voltage output of the O2 sensor should be measured by using a scan tool or a Multimeter
• Make sure that you visually inspect the base of the sensor for soot saturation, heat stress, or oil deposits
• You must check the air intake and vacuum hoses to see if there is any leakage

Common Mistakes When Diagnosing The P0133 Code

• One must not overlook the fact that a dirty mass air flow sensor can cause an O2 sensor circuit slow response
• The wires and electrical terminals of the oxygen sensor should be cleaned properly
• A leaking vacuum line or intake manifold leak may cause an erratic O2 sensor voltage reading, that’s why this fact should not be overlooked. Voltage readings which may set a code P0133