This refers to the second oxygen sensor on Bank 1. Bank 1 is the same side of the engine that cylinder 1 is on, the very front cylinder on the drivers side. It could need to be replaced, or there could be a short to voltage on the O2 signal circuit, or it could also be that the connector has been corroded, and needs to just be cleaned. I believe this code is the same for all vehicles.
Trouble code P0136 means: O2 Circuit (Bank 1, Sensor 2)
Trouble code P0136 means: O2 Circuit (Bank 1, Sensor 2)
Trouble code P0136 means:O2 sensor circuit malfunction (Bank 1 Sensor 2)
Code P0136 is the code set for your O2 Sensor that is located after your Catalytic Converter.
The OBD-II diagnostic port for a 1998 Mercury Mystique is located under the dashboard on the driver's side. You can find it near the steering column, often just above the brake pedal. It may be covered by a small panel or simply exposed, so you might need to look closely to locate it.
The diagnostic code PO735 on a Mercury Mountaineer indicates that the 5th gear has an incorrect gear ratio. This can be the result of a broken servo shaft.
Trouble code P0136 means:O2 sensor circuit malfunction (Bank 1 Sensor 2)
Trouble code P0420 means: Catalyst system efficiency below threshold (bank 1)
Trouble code P0136 means: HO2S-12 (Bank 1 Sensor 2) Circuit Malfunction
Trouble code P0301 means: Cylinder 1 Misfire Detected
warning code check faults indicated by subsequent codes
Trouble code P0171 means:System too lean (Bank 1)