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reddevil
08-11-2011, 09:04 AM
OK my girlfriend recently took her car (99 subaru impreza)to get inspected. they said the sensor in bank 1 sensor 1 needed to be replaced. doing a Google search I am lead to believe that is the knock sensor, is that correct.

Bigisland
08-16-2011, 06:12 PM
What did she get problem code number such a Pxxxx 4 digit ? Usually, B1S1 is meaning bank 1 which is #1 cylinder side and sensor 1 means the 02( or Fuel ratio) sensor on front of catalyst.