Check Engine Light Due to Failed Front O2 Sensor on Subaru Forester

The front oxygen (air fuel ratio) sensor element may develop a crack, causing the Check Engine Light to illuminate. Subaru has recalled certain models to replace sensors that may fail. The Subaru service program number is WXW-80, this is not a government mandated recall.


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Average mileage: 132,131 (58,800–230,000)
9 model years affected: 1998, 2000, 2001, 2002, more2003, 2004, 2005, 2009, 2011
64 people reported this problem
34 people shared problem details
2002 Subaru Forester120,000
the check engine light is on and it hesitates,i need to take my foot off gas and lowly climb speed,and while stopped at light etc it struggles to remain at a steady idle and often will stall, ive replaced both sensors twice, i have owned 3 subarus and if this prob isnt fixed a new wrx is NOT in the near future as planned where do i go for this problem, i just need the sensor i can install
2005 Subaru Forester120,000
check engine light on, cruise flashing, another PO131 code on my 2005 Subaru
2005 Subaru Forester133,000
Check engine light on and cruse flashing. Code indicates O2 sensor.
Check engine light - Oxygen Sensor
My Check engine light came on so I took it to a mechanic. They ran a diagnostic test on my Subaru and it reported that there was an issue with the O2 Bank 1 Sensor 1. I have not yet fixed it as I am researching the best way to take care of the problem (this is how I found the recall).
2003 Subaru Forester139,000
P0032 check engine light code
2005 Subaru Forester149,000
Just a guess on my part. Check engine light is on with blinking cruise. Sub wants to stall at idle and hard starting when warm.
2005 Subaru Forester144,000
Cruise control light blinks and check engine light stays on, had sensor reset and turned off cruise control was good for few days and happened again. Car is running fine, shop said new catalitic coverter is $850, just want to be sure it needs this and not a new sensor.
2002 Subaru Forester160,000
This is the second time I have had to replace the oxygen sensor. First time was at 65,000. I bought my 2002 Subaru Forester new and maintained all the required maintenance needed to keep it in excellent condition.
Bad front o2 sensor... Bought new one, jacked up car and fixed myself
Check engine light came on. Took the car to be checked. Mechanic said sensor was not functioning an had to be replaced. It was fixed for $351: $210 for the sensor and $141 for labor.
2002 Subaru Forester160,000
Bought the car from a dealer who obviously reset the light because it came on within 60 miles of ownership, so the mileage above probably isnt the most accurate.
2004 Subaru Forester115,000
check eng light, sensor fault code for front sensor.
2003 Subaru Forester166,813
Check eng light is on, code is for O2 sensor B1 S1
2002 Subaru Forester142,000
2002 Subaru Forester. O2 sensor causing check engine light to come on. Now could be linked to transmission lag-?
took it to the dealer. it went away for a few months and been back since.
Replaced sensor spark plugs ,spark plug wires,fuel filter
2005 Subaru Forester163,000
O2 sensor failure - replaced sensor.
2005 Subaru Forester178,000
Flashing cruise light and check engine light always on. Subaru dealer said not a problem and disconnected the engine, only to have it turn on again one week later. Now knocking hard, vibrating, when driving, and accelerating. I am now told its the o2 sensor.
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