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Discussion Starter · #1 ·
Hi,

I’ve sadly had a recurrence of the P0170 error code and understand it can often be the MAF but before I outlay on a new Bosch one I just wondered if there may be an easy way of testing whether this may be causing the issue?

Thanks.
 

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unplug it and go out to test it, if you notice improvement the sensor is ko, the box will fail but it will serve as a test
 

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Discussion Starter · #3 · (Edited)
unplug it and go out to test it, if you notice improvement the sensor is ko, the box will fail but it will serve as a test
It’s not causing any issues that I’ve noticed as yet the eml has just come on. I’ll wait to see any noticeable issues and then do as you suggest to see if there is an improvement.
 

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P0170 can be caused by many different faults, MAF, 02 sensors, EGR, exhaust gas leaks.

Try what jewels said first though.
 
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