The MAP sensor, or the manifold absolute pressure sensor, is an essential component of the engine management system in the Honda Accord. Also, a MAP sensor is found in fuel-injected vehicles, and its primary function is to provide information about intake manifold pressure to the Powertrain Control Module (PCM/ECM).
A malfunctioning or faulty intake manifold pressure sensor can lead to various engine problems such as rough idle, poor fuel economy, lack of power, and even engine stalling. Therefore, it is important to maintain and replace the intake manifold pressure sensor as per the manufacturer's recommendations.
Symptoms: Engine not start; Acceleration is not good; Idle speed is unstable; Intermittent extinguishing Also Known as: Manifold Absolute Pressure Sensor, Engine Load Sensor, Pressure Sensor, Boost Sensor Be Accurate. Be Determined. If you see the engine light on or the service engine soon warning light, the fault code P12A5 could be the culprit. This code is often caused by a faulty Manifold Absolute Pressure (MAP) Sensor, an open or shorted MAP Sensor harness, or a poor electrical connection in the MAP Sensor circuit.

Here are the most common symptoms of a bad manifold absolute pressure sensor: Due to erroneous engine load calculation, a defective MAP sensor will impair the ECM's ability to regulate air/fuel ratio and ignition timing. This can result in an overly rich or underly rich air-fuel combination. A bad MAP sensor might cause the following symptoms:

Look for these warning signs: Rich air-fuel ratio: Look for rough idle, poor fuel economy, slow acceleration and a strong smell of gasoline (especially at idle) rrKE.
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    • intake manifold pressure sensor symptoms