Where is sensor 1 on a Subaru Legacy?
Sensor 1 is upstream of the catalytic converter. When the engine is cold, it has a hard time getting a good reading from the Legacy’s oxygen sensors. Without a good reading, it is difficult for the ECM to determine the proper air/fuel mixture to give the engine.
Where is Bank 1 on a Subaru Legacy?
Bank 1 is the side of the engine with cylinder 1. If you have a four cylinder engine or inline six, it’s the only bank. Sensor 1 is upstream of the catalytic converter. When the engine is cold, it has a hard time getting a good reading from the Legacy’s oxygen sensors.
What causes a Subaru Legacy p0031 to go bad?
P0031 Causes: Legacy 1 Wiring Issue. Due to the location of the oxygen sensors (under your Legacy, on the hot exhaust pipes), the wiring harness around them is easily susceptible to damage. 2 Oxygen Sensor. It is highly likely that the oxygen sensor has gone bad when you get this code. 3 Bad ECM. …
Sensor 1 is upstream of the catalytic converter. When the engine is cold, it has a hard time getting a good reading from the Legacy’s oxygen sensors. Without a good reading, it is difficult for the ECM to determine the proper air/fuel mixture to give the engine.
What does p0031 mean on a Subaru Legacy?
P0031 is a generic code, which means that it has the same meaning for the Subaru Legacy as it would any other OBDII equipped vehicle. As far as diagnostic trouble codes go, this is a relatively easy one to diagnose. It is usually caused by a bad oxygen sensor, or a wiring issue.
Bank 1 is the side of the engine with cylinder 1. If you have a four cylinder engine or inline six, it’s the only bank. Sensor 1 is upstream of the catalytic converter. When the engine is cold, it has a hard time getting a good reading from the Legacy’s oxygen sensors.
How to check DTC on a Subaru select?
Repair or replace each component. 2 CHECK INDICATION OF DTC. 1) Turn the ignition switch to OFF. 2) Connect the Subaru Select Monitor to the data link connector. 3) Turn the ignition switch to ON and start up the Subaru Select Monitor.