What causes a bad O2 sensor on a Subaru Impreza?
You’ll go to get an emissions check done, and your Impreza fails the test. Without a check engine light, it can be tough to lock down exactly what would cause the vehicle to fail, but oxygen sensors are one of the more common causes. Impreza Bad O2 Sensor Symptoms & Causes: Conclusion
What happens if the oxygen sensor goes bad on a Subaru Outback?
When an O2 (oxygen) sensor go bad, it’ll cause your Subaru Outback ‘s engine to run less efficiently. Your Outback can exhibit symptoms when the Oxygen sensor has gone bad. Or, it may exhibit none at all. Often enough, the only sign of the problem at all is the service engine soon light being on.
What is the OBD code for a Subaru Impreza?
Manifold vacuum sensor or circuit/coolant temperature sensor or circuit on 1984 models)/float chamber vent solenoid valve or circuit (1983 to 1985) Fuel injector no. 2 (Legacy, Impreza, Justy, SVX); Fuel injector 3 and 4 (Loyale, GL, DL); Fuel injector 5 and 6 (XT6)
When does the timing belt fail on a Subaru Outback?
For a number of drivers, the timing belt failed at around 60,000 miles to 70,000 miles. The official word on the lifespan of a timing belt in your Subaru Outback is between 60,000 miles and 90,000 miles so this problem is within the range, but it’s still annoying that it happens almost as soon as the timing belt was scheduled to where else.
What causes an incorrect O2 sensor reading on a car?
There are also some other possibilities such as an internally leaking EGR system, (but this will typically set a separate code). A leak in the exhaust system before the O2 sensor will also cause incorrect readings. And always check for after- market modifications.
Why does the Check Engine light come on on my Subaru Impreza?
Oxygen sensors can change the way that your Impreza’s engine runs. Most of the time, the check engine light will come on. It’s a good thing that the check engine light would come on, as there is more than one oxygen sensor, and they can be difficult to get to and test.
What are the symptoms of a bad oxygen sensor?
Symptoms of a Bad or Failing Oxygen Sensor 1 Check Engine Light comes on The first line of defense is the Check Engine Light. 2 Bad gas mileage and rotten egg smell If the oxygen sensor is going bad, the fuel-delivery and fuel-combustion systems will be thrown off. 3 Rough engine idle and misfires