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VW Crafter 2009 2.5 tdi fault code and problems P0471 P2BAC

Posted By Unknown (Google) Tuesday, July 15, 2014 6:15:51 PM
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Unknown (Google)
 Posted Tuesday, July 15, 2014 6:15:51 PM
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Last Active: Wednesday, July 16, 2014 12:34:59 PM
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hi. If anyone can help

I have the same codes popping up
P0471 and P2BAC

When i drive and slow down i get the rpm meter go from a normal 700 rpm to 1100 rpm. driving along it makes like a air squeak noise when changing gear then all back to normal on the rpm.If i disconnect the exhaust pressure sensor everything works fine BUT I'm guessing it will not go into regen on the DPF

going to change the sensor part number 076906051A in the morning so hope all will work fine. though any help or advice would be helpful and im not sure if I need to calibrate the new sensor somehow.

Just hoping i don't need to buy a new DPF though I have never seen the DPF light come on, just the engine management.


thanks
simon
sparki1
 Posted Tuesday, July 15, 2014 7:47:28 PM
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Not a system for DIY. you need this on a good scanner that can read codes, live data and is capable of running adaptions for any parts that may need changing. You will have to pay someone yes, but it will be cheaper that the guess work approach you have taken so far, sorry.
Unknown (Google)
 Posted Wednesday, July 16, 2014 12:36:32 PM
Saturday Job

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Thanks everyone for the non help even though I do have pro scanner ect..

To anyone who gets snubbed by this forum.. It was the sensor and now its working 100%
Robski
 Posted Wednesday, July 16, 2014 12:41:44 PM
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It was the sensor and now its working 100%
is it ?

Can you explain how & what it's measuring ?


If i disconnect the exhaust pressure sensor everything works fine BUT I'm guessing it will not go into regen on the DPF
'guessing'........ this alone tells me you don't fully understand a DPF system so as above, how do you know it is working 100% ?


Rob.
K And R
 Posted Wednesday, July 16, 2014 1:11:54 PM
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Unknown

" I do have pro scanner ect.. " pro scanner of unknown name !! and ect = ElectroConvulsive Thererapy hmm. not sure how that helped you fix this ?


Kev.

"If you dont KNOW how it works, don,t try to test or fix it"
Wednesday, July 16, 2014 1:13:38 PM by K And R

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