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Home » How to Quickly Fix Code P1133 And P1153: Expert Tips revealed!

How to Quickly Fix Code P1133 And P1153: Expert Tips revealed!

How to Fix Code P1133 And P1153

To fix code p1133 and p1153, you need to replace the oxygen sensor in your vehicle’s engine. This will help resolve the issues related to these error codes.

Oxygen sensors are crucial for measuring the oxygen levels in the exhaust gas and ensuring the engine operates efficiently. When these sensors fail, it can lead to decreased fuel efficiency and increased emissions. By replacing the faulty oxygen sensor, you can restore your vehicle’s performance and resolve the p1133 and p1153 codes.

How to Quickly Fix Code P1133 And P1153: Expert Tips revealed!


Understanding The Meaning Of Codes P1133 And P1153

Codes p1133 and p1153 are diagnostic trouble codes (dtcs) commonly found in vehicles equipped with obd-ii systems. These codes relate to the malfunction of the oxygen sensors in the engine. Understanding what these codes mean can help you troubleshoot and fix the issues with your vehicle.

Overview Of Codes P1133 And P1153

  • Code p1133: This code indicates a problem with the bank 1 sensor 1 oxygen sensor heater circuit. It means that the oxygen sensor is not heating up properly or is taking too long to heat up. This can lead to inaccurate readings and poor engine performance.
  • Code p1153: This code is similar to p1133 but relates to the bank 2 sensor 1 oxygen sensor heater circuit. It means that the corresponding oxygen sensor on the other side of the engine is experiencing the same issue.

Common Symptoms Associated With These Codes

  • Check engine light (cel) illuminated: The most common symptom when these codes are present is the illumination of the check engine light on the dashboard. This light serves as an indicator that something is not functioning correctly in the engine.
  • Poor fuel economy: As the oxygen sensors play a crucial role in determining the air-fuel mixture for optimal combustion, a malfunctioning sensor can disrupt this balance. This can result in decreased fuel efficiency and increased fuel consumption.
  • Rough idle: A failing oxygen sensor can cause an irregular or rough idle. You may notice the engine revving or sputtering inconsistently when the vehicle is stationary.
  • Reduced engine performance: When the oxygen sensor is not functioning properly, the engine’s control module receives inaccurate readings. As a result, the engine may not perform at its best, leading to a lack of power and decreased acceleration.
  • Failed emissions test: Faulty oxygen sensors can result in increased emissions, which may cause your vehicle to fail an emissions test. These codes should be addressed promptly to ensure compliance with local emissions regulations.

By understanding the meaning of codes p1133 and p1153, you can have a better understanding of the issues affecting your vehicle. Identifying these problems early on and addressing them promptly can help prevent further damage and ensure optimal engine performance.

If you encounter these codes, it is recommended to consult a qualified technician or mechanic to assist you in diagnosing and resolving the underlying issues. Remember, addressing the root cause of the problem is essential for a durable and effective repair.

Diagnosing The Root Cause Of Codes P1133 And P1153

If you’re encountering the dreaded codes p1133 and p1153 on your vehicle, it’s crucial to diagnose the root cause to fix the issue effectively. These codes usually indicate a problem with the oxygen sensor, specifically, the bank 1 sensor 1 and bank 2 sensor 1.

Below is a step-by-step guide to help you diagnose the problem and get your vehicle back to optimal performance.

Step-By-Step Guide For Diagnosing The Issue:

  • Start with a visual inspection: Begin by examining the oxygen sensor wiring harnesses and connections for any signs of damage, corrosion, or loose connections. Faulty wiring can cause these codes to appear.
  • Check the oxygen sensor operation: Using a scan tool, observe the live data for the oxygen sensors. The sensor voltage should fluctuate between 0.1 and 0.9 volts. If the voltage is continuously high or low, it may indicate a faulty sensor.
  • Inspect the air intake system: A leak or restriction in the air intake system can affect the oxygen sensor readings. Check for any cracks, leaks, or loose connections in the intake manifold, hoses, and air filter housing. Repair or replace any damaged components.
  • Test the oxygen sensor heater circuit: P1133 and p1153 codes can also be triggered if there is a problem with the oxygen sensor heater circuit. Use a multimeter to measure the resistance of the sensor’s heater element. A significantly high or low resistance reading may indicate a faulty sensor.
  • Inspect the exhaust system for leaks: A leaking or damaged exhaust system can interfere with the oxygen sensor readings. Inspect the exhaust pipes, catalytic converter, and muffler for any leaks or holes. Repair or replace any damaged components.
  • Verify the fuel mixture: A lean or rich fuel mixture can trigger the p1133 and p1153 codes. Use a fuel pressure gauge and a scan tool to monitor the fuel pressure and the short-term fuel trim. Adjust the fuel mixture if necessary.
  • Perform a smoke test: A smoke test can help identify any vacuum leaks in the engine that may affect the oxygen sensor readings. Use a smoke machine to introduce smoke into the intake system and observe for any leaks or escaping smoke.

Tools And Equipment Needed For Diagnosis:

  • Scan tool: Use a diagnostic scan tool to read and clear the trouble codes, as well as observe live data from the sensors.
  • Multimeter: A multimeter is essential for measuring the resistance of the oxygen sensor’s heater circuit.
  • Fuel pressure gauge: Use a fuel pressure gauge to monitor the fuel pressure during the diagnosis.
  • Smoke machine: A smoke machine is helpful for detecting vacuum leaks in the engine.
  • Basic hand tools: Keep a set of basic hand tools handy for removing and installing components during the inspection and repair process.

Identifying the root cause of codes p1133 and p1153 is vital for fixing the issue accurately. By following this step-by-step guide and utilizing the necessary tools, you’ll be able to diagnose the problem and take the appropriate action. Remember, addressing the underlying cause will ensure your vehicle performs optimally and reduces the likelihood of recurring codes in the future.

Expert Tips For Fixing Codes P1133 And P1153

Is your check engine light on and showing codes p1133 and p1153? Don’t panic! These codes indicate an issue with the oxygen sensor on your vehicle. Luckily, there are several expert tips you can follow to fix this problem and get your car running smoothly again.

Tip 1: Check And Clean The Oxygen Sensor

  • Start by locating the oxygen sensor, usually found on the exhaust manifold or the downstream of the catalytic converter.
  • Disconnect the sensor and inspect it for any signs of dirt, debris, or corrosion.
  • Clean the sensor using an oxygen sensor cleaning solution or a gentle brush and let it dry completely.
  • Reinstall the sensor and clear the codes to see if the issue is resolved.

Tip 2: Inspect The Wiring And Connectors

  • Carefully examine the wiring harness and connectors connected to the oxygen sensor.
  • Look for any signs of damage, such as frayed wires, loose connections, or burnt pins.
  • Repair or replace any faulty wiring or connectors to ensure a secure and proper connection.
  • Clear the codes and test the vehicle to see if the problem persists.

Tip 3: Replace Faulty Components If Necessary

  • If the oxygen sensor is still not functioning properly, it may be necessary to replace it.
  • Consult your vehicle’s manual or an automotive expert to identify the correct oxygen sensor for your specific make and model.
  • Remove the old sensor and install the new one, making sure to follow the manufacturer’s instructions.
  • Clear the codes and test your vehicle to verify if the issue has been resolved.

Tip 4: Perform A Thorough Inspection For Vacuum Leaks

  • Vacuum leaks can affect the performance of the oxygen sensor and trigger error codes.
  • Check all vacuum hoses and connections for leaks, cracks, or loose fittings.
  • Use a vacuum gauge or smoke test to identify any potential leaks.
  • Repair or replace any damaged or faulty vacuum lines to restore proper operation.
  • Clear the codes and test your vehicle to see if the issue has been resolved.

Tip 5: Resetting The Check Engine Light

  • After performing the necessary repairs or replacements, it’s important to reset the check engine light.
  • Use an obd-ii scanner or disconnect the battery for a few minutes to clear the stored codes.
  • Start the vehicle and check if the check engine light remains off.
  • If the light comes back on, it may indicate an unresolved issue that requires further diagnosis.

Remember, if you’re unsure or not comfortable performing these steps, it’s always best to consult a qualified mechanic or automotive technician. They have the knowledge and expertise to properly diagnose and fix the issue. Keep a record of the steps you’ve taken and any changes you’ve made for reference.

By following these expert tips, you’ll be well on your way to resolving codes p1133 and p1153 and getting your vehicle back in top shape.

Frequently Asked Questions On How To Fix Code P1133 And P1153

How Do You Fix Code P1133 And P1153?

To fix code p1133 and p1153, you will need to replace the oxygen sensor responsible for the error codes.

What Causes Code P1133 And P1153?

Code p1133 and p1153 are usually caused by a faulty oxygen sensor or a problem with the fuel system.

How Do I Know If My Oxygen Sensor Is Bad?

You can determine if your oxygen sensor is bad by checking for symptoms such as poor fuel economy, rough idle, or a check engine light.

Is It Safe To Drive With Code P1133 And P1153?

While it’s generally safe to drive with these error codes, it’s important to have your vehicle diagnosed and repaired to avoid potential damage to the engine.

How Much Does It Cost To Fix Code P1133 And P1153?

The cost to fix code p1133 and p1153 can vary depending on the make and model of your vehicle, but it typically ranges from $200 to $500.


Fixing code p1133 and p1153 can be a challenging task, but with the right knowledge and guidance, it is completely doable. By understanding the causes of these codes, such as oxygen sensor malfunction or exhaust leaks, you can start troubleshooting the issue effectively.

Start by inspecting the oxygen sensors and replacing them if necessary. Check for any leaks in the exhaust system and fix them promptly. It is also worth considering cleaning the throttle body and mass air flow sensor, as these components can affect the readings of the oxygen sensors.

Additionally, resetting the engine control module can help clear any stored codes. Remember to test the vehicle after each step to ensure the problem has been resolved. By following these steps, you can tackle code p1133 and p1153 and get your vehicle back in optimal running condition.

John Thompson

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