Details

• Brand:

  

• SKU:

  22693-3TY0B

• Positions: Front
• Other Names:

  Ft Oxygen Sensor, Sensor Assembly Air Fuel Ratio

• Description:

  Getting a check engine light or poor fuel mileage? Restore accurate fuel mixture control with the OEM Nissan Air Fuel Ratio Sensor (Part #22693-3TY0B), engineered for precise readings and factory performance — not to be confused with a standard oxygen sensor.

  Air Fuel Ratio Sensor (22693-3TY0B) – OEM Replacement Part for Nissan

  This genuine Nissan Air Fuel Ratio (A/F) Sensor measures the precise oxygen-to-fuel ratio in the exhaust stream before the catalytic converter, allowing the ECM to adjust fuel delivery with exceptional accuracy. While often mistaken for an O₂ sensor, this advanced wideband sensor provides a far more detailed and faster response, ensuring smooth performance, cleaner emissions, and better fuel economy.

  Specifications

  • Part Type: Air Fuel Ratio (A/F) Sensor – Upstream

  • Function: Measures the precise air-to-fuel ratio for ECM fuel-trim adjustments

  • Construction: OEM-grade wideband zirconia sensor with integrated heater element

  • Position: Upstream (in the exhaust manifold before the catalytic converter)

  • Includes: One (1) Air Fuel Ratio Sensor with OEM connector and harness

  Compatible Nissan Models

  • 2012 – 2018 Nissan Altima (L33US)

  Fitment may vary by engine type or trim. To confirm compatibility for your specific vehicle, click here

  and enter your VIN using the “Search by VIN #” feature before ordering.

  Key Features

  • Genuine Nissan OEM part ensures precise air-fuel ratio feedback

  • Not an O₂ sensor — uses wideband technology for faster, more accurate readings

  • Restores smooth idle, efficient combustion, and reduced emissions

  • Engineered for direct plug-in installation — no splicing or modification

  • Heat- and corrosion-resistant construction for long life in high-temp environments

  Air Fuel Ratio Sensor vs. Oxygen Sensor: What’s the Difference?

  • Air Fuel Ratio Sensor (A/F Sensor): A wideband sensor located upstream (before the catalytic converter). It measures the exact air-to-fuel ratio across a wide range, allowing precise fuel control for maximum efficiency and performance.

  • Oxygen Sensor (O₂ Sensor): A narrowband sensor typically located downstream (after the catalytic converter). It monitors the efficiency of the catalytic converter and helps fine-tune fuel trims but cannot measure mixture as precisely.

  In short — the A/F sensor controls fuel delivery, while the downstream O₂ sensor monitors emission performance. Installing the wrong sensor type can trigger fault codes and drivability issues.

  Important Installation Note

  When replacing the A/F sensor:

  • Allow the exhaust system to cool completely before removal.

  • Do not interchange A/F and O₂ sensors, even if the connectors look similar.

  • Inspect the wiring harness and connector for damage or corrosion.

  • Clear any stored fault codes and perform an ECM relearn or idle trim reset if required.

  Avoid using aftermarket “universal” sensors — incorrect resistance or signal range can cause repeat fault codes (e.g., P0130, P0133, P0150).

  Failing to Replace a Faulty Air Fuel Ratio Sensor Can Lead To:

  • Check Engine Light: From inaccurate mixture readings

  • Poor Fuel Economy: ECM delivers too much or too little fuel

  • Rough Idle or Hesitation: Incorrect mixture during warmup

  • Failed Emissions Test: From unbalanced air/fuel mixture

  • Catalytic Converter Damage: Overly rich or lean conditions over time

  Related Components to Inspect or Replace

  • Downstream O₂ Sensor: Works with the A/F sensor to maintain overall emissions balance

  • Exhaust Gaskets and Manifold: Check for leaks that affect sensor accuracy

  • ECM Calibration: Verify idle and trim values after replacement

  • Throttle Body: Clean periodically for consistent airflow readings

  Order with Confidence

  Order the OEM Nissan Air Fuel Ratio Sensor (22693-3TY0B) to restore precise fuel control and performance. Genuine Nissan sensors guarantee accurate signal range, factory calibration, and long-term reliability for your vehicle’s emissions system.

  Restore Your Nissan with Genuine Accessories!

  Shop factory-direct Nissan accessories — from filters and floor mats to performance components — all in one place at parts.chapmannissan.com

  . Genuine parts ensure perfect fit, compatibility, and long-lasting performance.

  Why Buy OEM Nissan Parts from Chapman Nissan?

  Every part we sell is genuine from Nissan, built to strict factory standards for fit, accuracy, and durability. Unlike aftermarket sensors, genuine Nissan A/F sensors communicate within the ECM’s correct voltage and response curve to prevent false codes and poor performance.

  • Fast, secure shipping from a certified Nissan dealer

  • VIN verification available for guaranteed compatibility

  • Trusted by Nissan owners and professional technicians

  Sensor & Emissions FAQ

  Q: Is this the same as an oxygen sensor?
  A: No. This is an Air Fuel Ratio (A/F) sensor — a wideband type used before the catalytic converter for fuel control.

  Q: Can I use an aftermarket O₂ sensor instead?
  A: No. A/F sensors and O₂ sensors operate differently and are not interchangeable.

  Q: Will this fix a P0130 or P0133 code?
  A: Yes, if the fault is caused by a failing A/F sensor. Always check for exhaust leaks before replacement.

  Q: Do I need to reset the ECM after installation?
  A: Yes, clearing stored codes or performing a fuel-trim relearn ensures proper ECM adaptation.

• Condition: New
• Replaces:

  226933ty0a

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