What does a cylinder 4 misfire mean?
P0304 indicates that cylinder number 4 is experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder. A misfire from one or more cylinders can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure.
Are all Subarus 4 cyl?
All of Subaru’s four-cylinder engines (except the EN series) are liquid-cooled, horizontally opposed boxer four-strokes.
Can I drive my car with a cylinder 4 misfire?
Should You Be Driving With A Misfiring Cylinder? It is not advisable to be driving any vehicle with a misfiring cylinder as this can cause irreparable damage to the engine of the car. The most common cause of a cylinder misfire is bad spark plugs or the imbalance of air or fuel mixture.
What is the trouble code on a Subaru Outback?
P0420 is a very common trouble code. This code number references a number that is given to you when you plug your Subaru Outback into a OBDII scanner. It doesn’t matter which model you have, this OBDII code has the same meaning for all of them (1996+) P0420 is a OBDII trouble code.
What causes a service engine light on a Subaru Outback?
Service Engine Light – Often, this is the only symptom of the Subaru Outback P0420 code. There are many things that can cause the P0420 trouble code in your Outback. Here are the most common ones. Oxygen Sensor – The P0420 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar readings.
What makes a Subaru Outback run out of gas?
Typically, they’ll idle ok and drive normal under a light load. Whenever the engine is put under a heavy load it’ll feel like it is running out of gas. It’s very similar to the symptoms of a bad fuel filter. Service Engine Light – Often, this is the only symptom of the Subaru Outback P0420 code.
What are the oxygen sensors on a Subaru Outback?
Your Outback has at least two oxygen sensors, one before and after the catalytic converter. Among the many jobs that oxygen sensors have is they have to measure the emissions levels coming in and out of the converter.