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

Problem Description and Possible Solution

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.


Problem Data
RepairPal Verified
Average mileage: 133,758 (35,000–389,000)
13 model years affected: 1998, 2000, 2001, 2002, more2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2012
154 people reported this problem
Viewing 1 - 20 of 53 comments
check engine light on, cruise flashing, another PO131 code on my 2005 Subaru
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
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).
Check engine light on and cruse flashing. Code indicates O2 sensor.
Check engine light - Oxygen Sensor
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.
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.
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
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.
Check engine stays on, OBD2 says o2 sensor & Idle control valve. replaced both, problem remains. Car surges, has trouble maintaining steady idle.
check eng light, sensor fault code for front sensor.
2002 Subaru Forester. O2 sensor causing check engine light to come on. Now could be linked to transmission lag-?
engin light came on..checked code and replaced o2 sensor
Check eng light is on, code is for O2 sensor B1 S1
P0032 check engine light code
Replaced sensor spark plugs ,spark plug wires,fuel filter
I've had this happen twice now, only two years apart! The dealership said "oh, things just wear-out sometimes." It happened the first time with about 65k and the second time 75k.
02 sensor, cruise control light and check engine light came on after we had the head gasket fixed. Getting quotes on the price but initially told price would be $250+ from a local parts guy...hoping we can find it cheaper from another dealer.
Same problem; all kinds of repairs done to exhaust. Just now learning of recall. Not yet resolved;engine light still illuminated.
Check engine light on and service dept said not to worry. It is probably just a problem with the sensor. This is the 2nd time being serviced for this problem.