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Re: Subaru O2 sensor
Posted to Technical Theory Forum on 5/31/2006 1 Reply

Rusty,

B1S1 is an AFRS. Alldata gives scan tool info based on the factory scan tool. Whe Ricky asked me to come over to help, I noticed a 12 volt 50% square wave. Our data is biased positive on FF total fuel trim.

Regards, Login to read more.

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