Difference between P0133 and P1133

What is GM code P1133?

OBD II fault code P1133 is a manufacturer specific code, and on some applications, this code is defined as “HO2S (Heated Oxygen Sensor) Insufficient Switching Sensor 1”, and is set when the PCM (Powertrain Control Module) detects an insufficient number of switching cycles between a rich running and a lean running …

What does the code P0133 mean?

The code P0133 indicates your vehicle’s oxygen sensor is having a problem. This sensor monitors how much oxygen comes out of the engine and transmits this information to your vehicle’s computer.

Can you drive with P0133?

Like with most O2 sensor problems, you can most likely keep driving with a P0133 code, but you’ll want to get it fixed. You’ll be using more fuel and won’t have a chance of passing an emissions test if required in your area.

How do I fix code P0133?

What repairs can fix the P0133 code?

  1. Usually a replacement of the oxygen sensor will fix the P0133 code.
  2. At times the sensor itself will not be causing the code P0133, so a technician must check for other faults such as vacuum leaks, a dirty mass air flow sensor, or leaks in the exhaust system.

What does P2A00 mean?

A P2A00 code means that the powertrain control module (PCM) has detected a voltage reading from the oxygen (O2) sensor for engine bank 1 that is outside of normal parameters.

What is heated oxygen sensor?

OBD II equipped vehicles use heated oxygen sensors. Heated oxygen sensors have an internal heater circuit that brings the sensor up to operating temperature more quickly than an unheated sensor.

What causes O2 sensor slow response?

The slow response of an O2 sensor may be due to a sensor that is just getting old and over time may get contaminated with time with carbon and other contaminants that deteriorate the sensor over time.

Is Bank 1 upstream or downstream?


Bank 1 Sensor 1 means Upstream Right/Rear;Bank 2 Sensor 1 means Upstream Left/Front;Bank 1 Sensor 2 means Downstream Right/Rear;Bank 2 Sensor 2 means Downstream Left/Front.

What does Post Catalyst fuel Trim system Too Lean Mean?

If you see this generic code, it’s likely a problem in the exhaust system. Your vehicle is getting too much air and not enough fuel, creating a lean condition that disrupts the fuel efficiency of your vehicle.

Is P2096 serious?

A P2096 code is relatively serious. If you notice this code, you should plan to fix the problem. Still, you’ll be able to drive your car in the near-term without worrying too much. However, if you choose not to fix the issue for a prolonged period, then you might end up causing serious damage to your vehicle’s engine.

Is P2096 upstream or downstream?

Code P2096 stands for “Post Catalyst Fuel Trim System Too Lean (Bank 1)”. The code indicates that your car’s primary computer, which is often referred to as the powertrain control module or PCM, perceives a lean fuel-to-air mixture downstream of the catalytic converter.

Where is the post catalyst oxygen sensor?

The sensor is typically located on the passenger side of the car, mounted directly onto the exhaust pipe near the catalytic converter. When the sensor goes bad, your car may lose up to 40 percent of its fuel efficiency, because your car will use too much gas.

Is there a difference between upstream and downstream O2 sensor?

The upstream sensor monitors the level of pollutants in the engine’s exhaust and sends this information to the ECU that continuously adjusts the air-fuel ratio. The downstream sensor measures the level of pollutants passing through the catalytic converter.

Are pre and post cat O2 sensors the same?

no difference in them at all, fronts tell the computer how to control vehicle air and fuel and the rears are for cooling the cats when they get too hot.