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16856 code


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hi guys

 

Today engine Amber ligh come up and emissions check , code16856, ive got superb 2.0 TDI 140, could b sensor g450? How much is the new one and labour cost?

 

Cheers

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Looks like this:

16856
P0472
Exhaust Pressure Sensor 1 (G450), Low

 

Part of the diesel particulate filter system.  Worth reading the self study guide on DPF system on 2.0 cars.

http://www.volkspage.net/technik/ssp/ssp/SSP_330.pdf

 

No idea how much it costs or whether that will fix your problem.  You don't want to run with it failed for long though as you may end up with a blocked DPF.

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