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: 127,608 (30,000–230,000)
12 model years affected: 1998, 2000, 2001, 2002, more2003, 2004, 2005, 2006, 2007, 2009, 2011, 2012
84 people reported this problem
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Viewing 1 - 20 of 39 problem details
2005 Subaru Forester 120,000 mi,
check engine light on, cruise flashing, another PO131 code on my 2005 Subaru
2002 Subaru Forester 120,000 mi,
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 Forester 133,000 mi,
Check engine light on and cruse flashing. Code indicates O2 sensor.
2004 Subaru Forester 72,200 mi,
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).
2001 Subaru Forester 97,000 mi,
Check engine light - Oxygen Sensor
2002 Subaru Forester 160,000 mi,
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.
2004 Subaru Forester 115,000 mi,
check eng light, sensor fault code for front sensor.
2003 Subaru Forester 139,000 mi,
P0032 check engine light code
2009 Subaru Forester 35,000 mi,
The engine warning light came on unexpectedly while driving including the cruise light and kept blinking. I brought it to the dealer where I had purchased the car Don's Ford Subaru and they said it was the oxigen sensor at fault. They replaced it and the total cost with tax came out to $480.89. I had asked why this happened with such low miles and they said when a car gets older this can happen and that this vehicle has two sensors and the other one is ok.
2004 Subaru Forester 130,000 mi,
I have front O2 sensor (Sensor # 1) failing and check eng. light. Diagnostic shows the #1 O2 Sensor failing. Problem has not yet been fixed. It is a 2004 Subaru Forester X2.5
bought this car used from a gentleman, my 06 forester has had a constant problem with the check engine light coming on, along with the cruise control light. Took it to the shop and they tried to tell me it was the catalytic converter, $900 to replace, I put it off and took it to a different shop, and he said it was my o2 sensor (downstream i think) and it needed to be replaced
2002 Subaru Forester 30,000 mi,
My O2 sensor has been clicking on and off for over 10 + years - it all started for me when they changed the ethanol gas mixture here in Iowa. I've had Subaru diagnostics done on it twice from different dealers in this area - to only find nothing wrong and write it off to "fuel related"... $90.00 later.
2011 Subaru Forester 85,000 mi,
Check engine came on code P1153 Upstream air/oxygen sensor
2004 Subaru Forester 199,000 mi,
Check engine stays on, OBD2 says o2 sensor & Idle control valve. replaced both, problem remains. Car surges, has trouble maintaining steady idle.
2005 Subaru Forester 144,000 mi,
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.
2004 Subaru Forester 75,000 mi,
Bad front o2 sensor... Bought new one, jacked up car and fixed myself
2011 Subaru Forester 69,000 mi,
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 Forester 160,000 mi,
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.
2003 Subaru Forester 166,813 mi,
Check eng light is on, code is for O2 sensor B1 S1
2002 Subaru Forester 142,000 mi,
2002 Subaru Forester. O2 sensor causing check engine light to come on. Now could be linked to transmission lag-?