Description of DTC code P2187

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

  • 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

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

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.

Codes related to P2187

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