Walker 225-1166 Manifold Absolute Pressure Sensor

Reliable Manifold Absolute Pressure Sensor for Nissan and Infiniti

The Walker Products 225-1166 Manifold Absolute Pressure Sensor is designed to provide accurate engine load data for optimal performance. Compatible with select Nissan and Infiniti models, this sensor helps maintain efficient engine operation and emission control.

• Direct replacement Manifold Absolute Pressure (MAP) sensor
• Compatible with Infiniti QX50, QX55, and Nissan Altima models
• Part number 225-1166 ensures precise fit and function
• Supports accurate engine load and air pressure readings
• Manufactured under Walker Products line for emission control sensors

About the Walker Products Brand Line

Walker Products specializes in emission control components, including sensors that meet OEM specifications. The 225-1166 MAP sensor is part of this product line, offering reliable performance and durability for emission-related engine management systems in Nissan and Infiniti vehicles.

Product Details and Functionality

The Walker 225-1166 Manifold Absolute Pressure Sensor measures the pressure inside the intake manifold, providing critical data to the engine control unit (ECU). This information is essential for adjusting fuel delivery and ignition timing, which helps optimize engine efficiency and reduce emissions. Designed for use in Infiniti QX50, QX55, and Nissan Altima models, this sensor ensures compatibility and reliable operation within the vehicle’s emission control system.

Common Issues Addressed by This MAP Sensor

• Erratic engine idling or stalling
• Poor fuel economy due to incorrect air-fuel mixture
• Check engine light triggered by faulty manifold pressure readings
• Reduced engine power and performance
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

When replacing the MAP sensor on Infiniti QX50, QX55, or Nissan Altima models, ensure the engine is cool before beginning installation. Disconnect the battery to prevent electrical shorts. Carefully remove the old sensor and clean the mounting area to avoid contamination. Install the Walker 225-1166 sensor securely and reconnect all electrical connectors. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Walker Products maintains strict quality control standards for their emission control sensors, including the 225-1166 MAP sensor. Manufactured to meet or exceed OEM specifications, this sensor supports reliable engine management and emission compliance. Warranty details are provided by the manufacturer and typically cover defects in materials and workmanship.