P2195 - O2 SENSOR SIGNAL STUCK LEAN BANK 1 SENSOR 1

POST UPDATED IN January, 2023

Description of DTC code P2195 Generic

The vehicle computer monitors the air/fuel ratio of the exhaust. It uses Oxygen (O2) Sensors to maintain the proper air/fuel ratio, i.e. 14.7:1, through the fuel system.

The O2 Sensor produces a voltage reading that is used by the PCM (Powertrain Control Module). If the PCM reads that the actual air/fuel ratio is well within the required range so that the PCM cannot make adjustments, it sets the DTC code P2195 OBDII.

Symptoms of fault code P2195 Generic

Causes of OBD2 P2195 Generic

The factors for which the fault code P2195 OBD2 is stored are

  • Bank 1 Oxygen Sensor 1 may be defective.
  • The O2 Sensor circuit may be open or shorted.
  • Deficient fuel injectors.
  • Intake air leaks.
  • The Positive Crankcase Ventilation (PCV) system may leak.
  • A malfunction of the Mass Airflow (MAF) sensor may be a problem.

Possible solutions of the DTC code P2195 Generic

Before setting the diagnostic code P2195 OBDII, you must do the following to correct it:

  • With a scanner, get the Oxygen Sensor readings and observe the fuel setting values. Compare with the manufacturer's data, and if there are differences you should make the respective adjustments.
  • Check the O2 Sensor circuit for a short to ground or power. Repair damaged cables or connectors.
  • Inspect vacuum lines and check for leaks. Change the line that has damage.
  • Make a fuel pressure test, the result obtained should be compared with the manufacturer's specifications. If the actual pressure does not meet the specified, repair.
  • Use a voltmeter to check the proper functioning of the MAF Sensor. Replace it if it does not meet the recommendations given by the manufacturer.
  • Replace the Oxygen Sensor.

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