SKP SK1581801 Mass Air Flow Sensor

Mass Air Flow Sensor Overview

The SKP mass air flow sensor, part number SK1581801, is a direct-fit emission control sensor for select Nissan and INFINITI applications. It is built for vehicles that need accurate intake air measurement to maintain proper engine management and drivability.

Compatible With 2019-2023 INFINITI QX50, 2022-2023 INFINITI QX60, 2022 INFINITI QX55, 2019-2022 Nissan Altima, 2022 Nissan Pathfinder, 2020-2022 Nissan Sentra, and 2021 Nissan Rogue.

• Measures incoming air for engine control system input
• Supports stable fuel delivery and throttle response
• Direct-fit replacement for select Nissan and INFINITI models
• Fits multiple late-model applications across the Nissan lineup

Detailed Product Information

This SKP mass air flow sensor, SK1581801, is intended for vehicles that rely on precise airflow data to calculate fuel delivery and engine load. When the sensor signal becomes inaccurate, the engine control module can receive incorrect information, which may affect idle quality, acceleration, and overall drivability. This part cross-references Nissan/INFINITI OE numbers 226805NA0A and 226806CA0B for the same application.

Common Issues This Part May Address

• Rough or unstable idle caused by incorrect airflow readings
• Hesitation or sluggish acceleration during throttle input
• Illuminated check engine light related to airflow sensor performance
• Poor fuel control from inaccurate engine load data
• Driveability concerns on affected Nissan and INFINITI vehicles

Installation Notes and Tips

Verify the OE part number and connector style before installation. After replacement, clear diagnostic trouble codes and confirm that the engine runs smoothly at idle and under light acceleration. For best results, inspect the intake tract for leaks or contamination that could affect sensor readings.