2009 BMW E91 320d - Boost pressure sensor

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Fri 31 Jul 2020 23:21
2009 BMW E91 320d - Boost pressure sensor - Warwick Humble

Good evening

Got a fault code for my boost pressure sensor

Other forums / media are saying it's the MAP sensor but that doesn't sound right (besides that's clean and has a different code etc)

Would it be near the turbo or is it on the charge pipe near the throttle body?

Thanks,

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Sat 1 Aug 2020 10:20
2009 BMW E91 320d - Boost pressure sensor - elekie&a/c doctor
Should be in the charge pipe between the turbo and the inlet manifold . Look down side of engine , left side . Remember, just because it’s flagged a boost pressure fault code, doesn’t mean the sensor is faulty.
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Sun 2 Aug 2020 08:11
2009 BMW E91 320d - Boost pressure sensor - Warwick Humble
Should be in the charge pipe between the turbo and the inlet manifold . Look down side of engine , left side . Remember, just because it’s flagged a boost pressure fault code, doesn’t mean the sensor is faulty.

Thanks

Is it the one on the pipe just before the throttle body?

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Sun 2 Aug 2020 10:02
2009 BMW E91 320d - Boost pressure sensor - elekie&a/c doctor
That looks like the one . If you clear the fault codes , then disconnect the sensor to see if that verifies this is the correct part . As I said before, just because it’s flagged a boost sensor fault , doesn’t necessarily mean that part is the problem.
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Mon 3 Aug 2020 14:50
2009 BMW E91 320d - Boost pressure sensor - Railroad.

How is the ECM supposed to know the difference between a faulty sensor reporting low boost pressure or a good sensor reporting actual low boost pressure? Answer, it can't. You need to do some proper diagnosis otherwise you'll be chucking parts at it and costing yourself a fortune. The first thing you need to be sure of is whether or not boost pressure is normal. You could have a worn turbo or an air intake leak.

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