My 1.6fsi had the EPC and emissions warning come on. 
I bought a basic VAG reader (ancel vd500), the error codes were 

08854 fuel pressure regulator control B control circuit high

08851 Fuel pressure regulator B performance

 

The car idles a bit rough and occasionally when accelerating hard, the car can fill chocked and not smooth. 
also there is occasionally an external smell of excess fuel 

 
Any ideas on what to change/fix first? 
 

Is it the fuel regulator or fuel sensor? 
 

I saw a video where a mechanic said the mini container bucket under the fuel pump can corrode (solid bottom disintegrates), this affects the fuel pump performance. 
 

 

I have had a look at the fuel pump and I can’t find the fuel sensor. 
there is a sensor on the pump but the other rail sensor isn’t located in the same place as other fsi engines, usually to the left of the pump. 
 

 my engine is the BLF and I think might be under the manifold 

 

I am going to have to get the garage to have a look and recommend what options to try and fix the error code and excess fuel consumption. 
 

picture of the BLF engine 1.6fsi 

 

Hi all stick not fully sorted. 
plugs, air filter and fuel filter changed. 
 

car more responsive but I have still epc and emission error, with the main error being fuel regulator 

 

anyone know if the fuel regulator is part of the fuel pump on the 1.6 FSI? 
 

any help much appreciated 

This week I tested all grounding points I could find as the latest error was fuel regulator short to ground. 

all grounding points tested ok and gave the same reading as the battery (12.10v)

 

any suggestions on what check or change? 
I have read a lot of posts where owners have changed fuel pumps and a lot of  sensors but it still didn’t cure the problem. 
 

 Car still runs, except it is using a lot more fuel (15% to 20% approx) and occasionally is lumpy on hard acceleration. 
 

An update for anyone who has the same issue in future 

 

I replaced the fuel pump this weekend. A straightforward job if you have the correct tools like size 14 fixed head spanner, jubilee/retainer clip clamp to remove clip safely and socket set. Took me 1hr15min, with a few stop starts and videoing some of it. 

 

In terms of results, car feels better and not lumpy however not driven it for long enough. Also mpg seems higher but again I need more days to check this properly 

 

the EPC error code 8854, fuel regular circuit high is still on. 
 

my next step will be cleaning the throttle body with throttle cleaner.