XPost: alt.autos.toyota   
   From: scharf.steven@geemail.com   
      
   Ray O wrote:   
   > "SMS"  wrote in message   
   > news:4aa88273$0$1587$742ec2ed@news.sonic.net...   
   >> I guess this is the month for the check engine light in our Toyotas.   
   >>   
   >> Today, in my 2001 4Runner, the Check Engine Light, the VSC Off and the VSC   
   >> Trac lights all came on at the same time.   
   >>   
   >> The OBD Code is P1135, which apparently is "A/F ratio sensor". How could   
   >> this be related to the VSC lights?   
   >   
   > We had the same problem with the O2 sensor in our Avalon.  Fixed the O2   
   > sensor and the VSC and Trac lights turned off.   
   >   
   > My guess is that the throttle retarding function for the VSC/Trac uses the   
   > signal from the O2 sensor or air/fuel sensor when cutting fuel.   
      
    From reading other people's experience with the same problem, some   
   people are saying the 02 sensor and some are saying the A/F Ratio   
   sensor. Are these the same thing?   
      
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