Bank 1 is the bank that has the #1 cylinder in it -- so this is the right side of the car. Yes, sensor #1 is pre-cat.
Please post what the code number is so we can tell whether the problem relates to the sensor, its heater, or a fuel adaptation problem. Also post the model year of your car as the DMEs vary depending on model year.
Regards,
paul...
Last edited by paulv; 11-15-2012 at 07:35 AM.
Reason: add model yr
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