Subaru Legacy Problems

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

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.

(8 people reported this problem)

Subaru Legacy Vehicles With This Problem

RepairPal Verified
Average mileage: 102,000 (62,000–160,000)
4 model years affected: 2000, 2001, 2004, 2006
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Viewing 1-3 of 3 comments
I've had a Bank 1 O2 sensor code (0420) since purchasing my car used in 2010. The check engine light came on within the first week of owning it. It has been an ongoing issue every year trying to get it inspected. I'm told it's more that the converter is shot. It would be great to find out if my car fits said recall. Especially since replacing the converter would be ridiculously expensive for me!