Table Of Contents

    Description of DTC code P2187 Generic

    The establishment of diagnostic code P2187 OBD2 implies that the PCM (Powertrain Control Module) detected a fuel mixture for bank 1, which turns out to be poorly idle.

    A lean fuel mixture indicates that there is an excess of air and an excessive lack of fuel.

    Symptoms of fault code P2187 Generic

    • Check Engine lighting.
    • Difficult to start the engine.
    • Rough or erratic idling.
    • Hesitation during acceleration.
    • Loss of motor power.
    • A strong smell of fuel.

    Causes of OBD2 P2187 Generic

    The factors by which the DTC code P2187 OBDII is stored are as follows:

    • Vacuum leaks from the engine, intake manifold, or vacuum supply lines.
    • The fuel cap may not fit properly.
    • Damaged wiring or connectors.
    • The system circuits may be short or open.
    • Perhaps the Mass Airflow Sensor (MAF) is contaminated.
    • The Manifold Absolute Pressure (MAP) Sensor may be defective.
    • The fuel pressure regulator may be in bad condition.
    • Defective Oxygen (O2) sensor

    Possible solutions of the DTC code P2187 Generic

    The steps to solve the failures related to the error code P2187 OBD2 are

    • Check that the front O2 sensor is working properly, it mainly handles the mixing. Replace it if necessary.
    • Check the fuel cap for cracks and seal properly.
    • Look for air leaks on the Mass Airflow (MAF) Check the hose between the sensor and the intake manifold for cracks and leaks. Repair if necessary.
    • Check the PCV valve and its hose for leaks. Make the particular adjustments.
    • Check the fuel injectors for leaks. Replace any damaged injectors.


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