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Q: codes u0401/p0303 engine light comes on ramdemly on 2007 BMW 328i

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
changed coil pack on cyl 3 too cyl 2 failed then changed spaked plugs failed
(1) Answer
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Cannot verify the U0401 code, but a 'U' code is normally a no communication on the Can lines between the modules.
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