Standard Motor Products AS234 Manifold Absolute Pressure MAP Sensor

The Standard Motor Products AS234 is a direct-fit replacement Manifold Absolute Pressure (MAP) sensor, also known as a BAPP (Barometric Absolute Pressure and Pressure) sensor. Engineered to restore precise pressure monitoring to your engine management system, this sensor is a high-quality OE-style replacement for worn or failing units.

How It Works:

The MAP sensor monitors intake manifold vacuum and pressure, converting those readings into an electrical voltage or frequency signal that the Powertrain Control Module (PCM) uses to determine engine load. This data is critical for calculating correct ignition timing advance and retard. On speed-density fuel injection systems, the MAP sensor also assists the PCM in estimating airflow into the engine for accurate fuel delivery.

Symptoms of a Failing MAP Sensor:

• Intermittent or persistent Check Engine light (MIL)
• Hesitation or stumbling during acceleration
• Poor fuel economy and elevated emissions
• Rough idle or reduced engine performance

Key Features:

• Direct OE replacement — no modifications required for installation
• Engineered to meet or exceed original equipment specifications
• Manufactured using precision robotic assembly processes with 100% in-line and end-of-line quality inspection
• Designed for long service life and reliable performance
• Sold individually; wiring harness not included
• UPC: 091769838454

Standard Motor Products is a trusted name in the automotive aftermarket, delivering sensors built to OE standards so you can restore confident engine operation.