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Old 11-20-2008, 10:01 PM   #71
throttlehead
Registered User
 
Join Date: Oct 2008
Location: columbus, Ohio
Posts: 320
My Ride: 330i Imola ZHP 6MT
code 2240 330i zhp

my car dropped me a SES. only one code posted as 2240
-O2 sensor positive current circuit/open Bank 2 sensor 1

so with some looking it appears to be the pre-cat O2 getting stupid at only 52K miles.

so the question is: is replacing this sensor the solution? what are the other things that could give the ECU to through this code? intake, coil, injectors?

my symptoms are what feels like misfiring...or stumbling upon accelerartion in 3-6th gears- its a slight stuttering that appears to quiet down or disappear with reduced(minimal) throttle input.

plugs have been replaced

thoughts on solution or problem track down...for this new owner ?>

thanks
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