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What is the oxygen sensor part number of a FJ Cruiser?


The oxygen sensor, also known as the O2 sensor, is a critical component in your Toyota FJ Cruiser's exhaust system. It monitors the level of oxygen in the exhaust gases and helps the engine control module (ECM) adjust the air-fuel mixture for optimal performance and emissions. If you're looking to replace the oxygen sensor in your FJ Cruiser, knowing the correct part number is essential to ensure compatibility and proper functioning.


Understanding the Role of the Oxygen Sensor


The oxygen sensor plays a vital role in maintaining your vehicle's efficiency and reducing harmful emissions. It provides real-time data to the ECM, which adjusts the fuel injection and ignition timing accordingly. A faulty oxygen sensor can lead to poor fuel economy, increased emissions, and even engine performance issues.


Finding the Correct Oxygen Sensor Part Number


The part number for the oxygen sensor in a Toyota FJ Cruiser can vary depending on the model year and engine configuration. Typically, Toyota uses Denso oxygen sensors as original equipment manufacturer (OEM) parts. Below are some general guidelines:



  • For 2007-2009 Toyota FJ Cruiser models, the upstream oxygen sensor part number is often Denso 234-9042.

  • For 2010-2014 Toyota FJ Cruiser models, the downstream oxygen sensor part number is commonly Denso 234-4261.

  • Always verify the part number with your vehicle's VIN or consult your owner's manual for accuracy.


It's important to note that aftermarket oxygen sensors are also available, but using OEM parts ensures compatibility and reliability. If you're unsure about the exact part number, a trusted auto repair shop or Toyota dealership can assist you in identifying the correct sensor for your FJ Cruiser.


Steps to Replace the Oxygen Sensor


Replacing the oxygen sensor in your FJ Cruiser is a straightforward process if you have the right tools and some mechanical knowledge. Here's a step-by-step guide:



  • Locate the faulty oxygen sensor. The FJ Cruiser typically has two sensors: one upstream (before the catalytic converter) and one downstream (after the catalytic converter).

  • Disconnect the battery to prevent electrical issues during the replacement process.

  • Unplug the electrical connector attached to the oxygen sensor.

  • Use an oxygen sensor socket or wrench to remove the old sensor.

  • Apply anti-seize compound to the threads of the new sensor (if recommended by the manufacturer).

  • Screw in the new oxygen sensor and tighten it securely.

  • Reconnect the electrical connector and the battery.

  • Start the engine and check for any warning lights or error codes.


Replacing the oxygen sensor can restore your vehicle's performance and fuel efficiency. If you're not comfortable performing this task yourself, consider visiting a professional auto repair shop for assistance.


Conclusion


Maintaining your Toyota FJ Cruiser's oxygen sensors is crucial for optimal performance and emissions control. By identifying the correct part number and following the replacement steps, you can ensure your vehicle runs smoothly and efficiently. If you have any doubts or need professional help, don't hesitate to reach out to a trusted auto repair service like Kevin's Autos for expert assistance.


Frequently Asked Questions

Are all Toyota oxygen sensors the same?


It's Easy To Find The Right OEM Oxygen Sensor For Your Car
Toyota assigns a part number to every part they make. Even each variation of the oxygen sensor has its own part number. They do this to make it easy for Toyota owners to find the right replacement parts for their car.



What brand of O2 sensor does Toyota use?


Denso
If I recall correctly, all toyota oem o2 sensors are made by Denso.



Which 02 sensor is bank 1?


Bank 1 Sensor 1 oxygen sensor is typically mounted on the exhaust manifold or very close to it before the catalytic converter. Locate the Catalytic Converter — Find the catalytic converter, and trace the exhaust pipe back towards the engine. The first oxygen sensor you encounter in this direction is Bank 1 Sensor 1.



How do I know which O2 sensor to buy?


Here are some steps you can take to determine which oxygen sensor you need:

  1. Check your vehicle's manual: Your vehicle's manual should have information on the type of oxygen sensor you need.
  2. Use an OBD2 code reader: An OBD2 code reader can help you determine which oxygen sensor is faulty by reading the error code.



How do I know which oxygen sensor I need?


Check your vehicle's manual: Your vehicle's manual should have information on the type of oxygen sensor you need. Use an OBD2 code reader: An OBD2 code reader can help you determine which oxygen sensor is faulty by reading the error code.



Is there a difference between bank 1 and bank 2 O2 sensors?


The upstream sensors are located on the exhaust manifold (nearest to the engine) and the down stream oxygen sensors are located after the catalytic converters (farther away from the engine). Bank 1 is the driver side and bank 2 is the passenger side.



How are O2 sensors numbered?


What is Sensor 1 & 2? The sensor number is telling us where on the exhaust system the O2 sensor or Exhaust temperature sensor is mounted. The 1st sensor is located closest to the engine and the last is located at the rear of the exhaust system.



How much does it cost to replace the O2 sensor on a Toyota FJ Cruiser?


The average cost for a Toyota FJ Cruiser Oxygen Sensor Replacement is between $575 and $642 but can vary from car to car.



What is the number for the oxygen sensor on a Toyota?


Toyota Prius Oxygen Sensor - 89465-47070.



What is the model number of the oxygen sensor?


Click for more details on each product.

Model numberSensing principleDetection range
KE-12F3LFGalvanic cell type0-30%
KE-25LF KE-25F3LFGalvanic cell type0-30%
KE-50LFGalvanic cell type0-30%
KE-25F3LFMGalvanic cell type0-100%


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.