Standard Ignition AS342 Manifold Absolute Pressure Sensor

Manifold Absolute Pressure Sensor for Nissan and Infiniti

Standard Ignition AS342 is a manifold absolute pressure sensor built for direct engine management signal input on select Nissan and Infiniti applications. It uses a 3-terminal, blade-style electrical connection with a single rectangular plug-in connector and one vacuum port for a clean, OE-style sensor layout.

Compatible With 2000-2001 Nissan Sentra, 2002-2004 Nissan Pathfinder, 2003-2006 Nissan Sentra, and 2002-2006 INFINITI Q45. The Standard Ignition AS342 is a practical replacement choice when the original MAP sensor is no longer delivering stable manifold pressure data.

Key Features

• Manifold Absolute Pressure Sensor for engine load and airflow signal monitoring
• 3-terminal design with male blade terminals
• Female rectangular plug-in connector for straightforward electrical connection
• Black finish with one vacuum port
• No hardware, O-rings, mounting brackets, or wiring harness included
• Direct-fit style for select Nissan Sentra, Nissan Pathfinder, and INFINITI Q45 applications

Detailed Description

Standard Ignition AS342 is engineered as a replacement MAP sensor for vehicles that rely on manifold pressure input to help the engine control system manage fuel delivery and drivability. This sensor configuration includes one connector, one vacuum port, and a compact black housing that matches common OE mounting and connection layouts. It cross-references Walker Products 225-1199 and Monroe Shocks & Struts 72738 for the same application.

For fitment-focused searches, this part is a strong match for a 2003-2006 Nissan Sentra MAP sensor replacement, a 2002-2004 Nissan Pathfinder manifold absolute pressure sensor, and a 2002-2006 INFINITI Q45 pressure sensor replacement. The Standard Ignition AS342 part number is also commonly used when comparing interchange references during diagnosis or repair planning.

What It Helps Address

• Erratic idle caused by inaccurate manifold pressure readings
• Hard starting related to incorrect engine load input
• Reduced throttle response from faulty MAP sensor data
• Check engine light conditions tied to pressure sensor faults
• Fuel mixture issues caused by unstable manifold vacuum signal reporting

Installation Notes and Tips

Before installation, verify the connector style, terminal count, and vacuum port layout against the original sensor. Inspect the vacuum line and electrical connector for damage, corrosion, or looseness before installing the replacement. Because hardware, O-rings, mounting brackets, and wiring harness are not included, reuse only serviceable original components where applicable.

Confirm vehicle application by year and model before ordering: Fits 2000-2001 Nissan Sentra, Fits 2002-2004 Nissan Pathfinder, Fits 2003-2006 Nissan Sentra, and Fits 2002-2006 INFINITI Q45.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for engine management and electrical replacement parts. AS342 is built to match the specified connector, terminal, and vacuum-port configuration for the listed applications, supporting accurate replacement selection for Nissan Sentra, Nissan Pathfinder, and INFINITI Q45 service work.