Industrial 22690-7S000 Oxygen Sensor

Description:

The Upstream & Downstream O2 Oxygen Sensors for Nissan Maxima 3.5L are used in engine management systems to monitor exhaust oxygen levels before and after the catalytic converter for precise air-fuel ratio control and emissions compliance. The upstream sensor regulates fuel mixture feedback to the ECU, while the downstream sensor monitors catalytic converter efficiency. Commonly installed on Nissan Maxima 3.5L V6 models where emissions control, fuel economy optimization, and diagnostic monitoring are required. Automotive technicians and repair specialists use these sensors for emissions system repair, engine performance restoration, and replacement of failed oxygen sensors affecting fuel trim or check engine light faults.

Applications:

These oxygen sensors are commonly used in Nissan Maxima 3.5L V6 exhaust systems including fuel injection control loops, catalytic converter monitoring, emissions compliance systems, and OBD-II diagnostic systems where accurate oxygen sensing is required to maintain optimal combustion efficiency, reduce emissions output, and ensure proper catalyst function.

Technical Specifications:

• Manufacturer: OEM / aftermarket automotive sensor
• Model / Part number: Vehicle-specific (Nissan Maxima 3.5L upstream & downstream set)
• Product type: Heated zirconia oxygen sensors (air-fuel ratio / O2 sensors)
• Vehicle compatibility: Nissan Maxima 3.5L V6 (multiple model years, typically 2009–present variants)
• Sensor positions: Upstream (Bank 1 Sensor 1) / Downstream (Bank 1 Sensor 2)
• Output signal: 0.1–0.9 V switching (narrowband type typical) or AFR wideband (upstream variant dependent)
• Heater circuit: Integrated 12V heater element for fast warm-up
• Thread size: M18 x 1.5 (common automotive standard)
• Body material: Stainless steel housing with ceramic sensing element
• Function: Air-fuel ratio feedback and catalytic converter efficiency monitoring
• Electrical connector: OEM sealed multi-pin automotive connector
• Operating environment: High-temperature exhaust gas stream

Common Replacements:

• Denso upstream + downstream O2 sensor set for Nissan Maxima 3.5L
• Bosch direct-fit oxygen sensor pair (Maxima 3.5L application)
• NTK / NGK OEM replacement oxygen sensor kit for Nissan VQ35DE/VQ35DD engines