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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > NOX sensor faulty?



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      02-21-2014, 03:06 PM   #1
spinna
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NOX sensor faulty?

hi, been having trouble with my car and the eml has been coming on, had someone to look at it and they said it was a faulty nox sensor because of the code they got,
which is 30EA which points to a faulty nox sensor.
ive had someone at a independant bmw garage check it and they said it was a faulty 02 sensor, lambda sensor? , so ive has this changed and the same code has came up about the nox sensor being faulty....
ive read that these can regen? can i do some motorway miles to make this so or maybe the wrong lambda sensor has been changed....
any advice would be great
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      02-24-2014, 08:14 PM   #2
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There are four O2 sensors (2 pre cat and 2 post cat). Maybe you have more than one bad sensors. Go back to the BMW shop and have them re-check the code.
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