To fix codes p1133 and p1153, replace the faulty oxygen sensor. These codes indicate a problem with the oxygen sensor’s circuit in bank 1 and bank 2, respectively.

The oxygen sensor plays a critical role in a vehicle’s emission control system, helping to measure the level of oxygen in the exhaust gases. However, a malfunctioning oxygen sensor can lead to decreased fuel efficiency and increased emissions. If your vehicle has triggered codes p1133 and p1153, it’s likely that the oxygen sensors in bank 1 and bank 2, respectively, are not functioning correctly. While other issues can cause these codes, replacing the oxygen sensors is generally the first step in addressing the problem. Here, we’ll explore some additional information about these codes and what you can do if your vehicle triggers them.


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Understanding Code P1133 And P1153

Code p1133 and p1153 are related to the oxygen sensor in a vehicle’s engine. P1133 is specifically related to the bank 1 sensor 1 oxygen sensor, while p1153 is related to the bank 2 sensor 1 oxygen sensor. Both codes indicate that the oxygen sensor is not functioning properly, which can affect the vehicle’s performance.

Symptoms of these codes include decreased fuel efficiency, engine misfires, and difficulty starting the engine. To fix these codes, the oxygen sensor may need to be replaced. It’s important to address these codes promptly, as they can cause damage to other parts of the engine if left unresolved.

Causes Of Code P1133 And P1153

Code p1133 and p1153 are usually caused by faulty oxygen sensors. These sensors play a significant role in ensuring the vehicle’s engine runs efficiently. A failed air/fuel ratio sensor can also trigger these codes. The sensor acts as a feedback mechanism for the engine control unit (ecu) to optimize the air/fuel mixture.

Malfunctioning mass airflow sensors can also cause these codes. This sensor is responsible for measuring the air coming into the engine. When the sensor gets clogged or fails, it can affect the engine’s performance. It’s crucial to diagnose and repair these codes promptly to avoid further damage to the engine.

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Steps To Fix Code P1133 And P1153

Code p1133 and p1153 can be diagnosed using scan tools. Replacing the oxygen sensors may also fix the issue. If that does not work, replacing the air/fuel ratio sensor or the mass airflow sensor should be considered as well. It’s important to properly diagnose the problem before attempting to fix it and to carefully follow the steps outlined by the manufacturer.

This will ensure that the issue is resolved and the vehicle is running smoothly once again. Keeping up with regular maintenance can also help prevent these and other codes from occurring, saving time, money, and frustration in the long run.

As always, it’s best to consult with a qualified professional if you are unsure about any aspect of the repair process.

Tips For Preventing Code P1133 And P1153

To prevent codes p1133 and p1153, regular maintenance of the vehicle is essential. You should check and inspect your vehicle’s air intake system, exhaust system and fuel quality for any blockages or poor quality. By doing so, you can avoid any potential damage to your car’s oxygen sensors.

Additionally, using good quality fuel will also help prolong the life of the sensors, reducing the risk of any issues arising. So remember, maintaining a healthy vehicle will not only prevent these codes but also prolong the life of your car’s sensors, saving you time and money.

Importance Of Code P1133 And P1153 Repair

Code p1133 and p1153 are essential in maintaining the performance of your vehicle. Repairing these codes is crucial in preventing further engine problems and meeting emissions standards. By fixing these codes, your vehicle will perform better and avoid costly repairs in the future.

With improved performance, you’re sure to enjoy a smoother ride and better fuel efficiency. Plus, fixing these codes will help you protect the environment by reducing harmful emissions. It’s important to address these codes immediately to keep your vehicle running smoothly and efficiently.

Don’t wait for the problem to get worse, schedule a repair today.

Frequently Asked Questions For How To Fix Code P1133 And P1153

1. What Are P1133 And P1153 Codes Related To In The Engine?

The p1133 and p1153 codes signify problems with the air/fuel ratio sensor on the engine.

2. What Are The Symptoms Of P1133 And P1153 Codes?

Symptoms include poor fuel economy, engine knocking, difficulty starting the engine, and a check engine light.

3. What Causes P1133 And P1153 Codes To Appear?

The codes can appear due to a faulty air/fuel ratio sensor, a damaged oxygen sensor, or a problem with the fuel injection system.


In the end, fixing code p1133 and p1153 requires careful attention and patience. Don’t rush to conclusions and start purchasing expensive parts before thoroughly evaluating your vehicle’s condition. By following the steps outlined in this guide, you will be able to identify the root cause of the issue and effectively resolve it, creating a more reliable and efficient engine performance.

Keep in mind that regular maintenance is key to avoiding these types of complications, and staying up to date with your check-ups will save you time and money in the long run. Don’t hesitate to consult a professional mechanic if you’re unsure about any of the steps, or if you feel you need assistance.

By taking these steps, you’ll be back on the road quickly and safely.

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