1998 Ford Escort engine fault code PO136

P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)

Need to replace your bank 1, sensor 2 oxygen sensor , located on the exhaust system. Normally when this code is thrown, it may be a downstream oxygen sensor that has failed as well. Most vehicles have 2 or 3 O2 sensors so you should check your sensors before replacing them to ensure you are replacing the correct one. To learn how to check an oxygen sensor, follow the link below..

https://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm

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