mlebioda

I have a 2005 Subaru Legacy with 18,000 miles. The check engine light came on during a very cold morning (-5F). Using an OBDII flash code reader, it stated I had a (P0131 Front oxygen (A/F) sensor circuit range/performance problem (low input) message. In addition, the cruise light flashes at the same time and does not engage. After I had erased the code, my cruise control did work again. The same flash code remerged after a few minutes. What are my next steps to asses and fix the problem? Mike

Thanks for all your advice. I went to the Subaru deal and was able to get a "Sen Assy-Knock" #22060aa070 for $95. I found it on the drivers side by the maninfold. It took me about 10 minutes to install after the engine cooled down. Thanks again,

I have a 2000 Outback (91,000 miles) with a PO325 Knock Sensor Code. I changed my spark plugs, ingintion wires and PCV at 75,000 mile with Subaru parts. What are my next steps. If I need to order a new sensor what is the part number? What are the instructions to change it? Thanks