VW Golf 1.6 FSi BAG 2004 - Fault code 16575 fuel pressure sensor (G247) implausible signal - Fixed #
Posted by Colin Stark on December 8, 2009, 7:52 pm
Year of Manufacture *: 2004 Engine Code or CC *: BAG 1.6 FSI ( Optional ) Scanner Used: VCDS
Hi, Colin here. I am wondering if anybody can throw some light on this fault code 16575 fuel pressure sensor [G247} implausible signal. I have to drive the car between 30 to 60 miles to get the fault code to log. When I am driving at speeds above 30 to 40mph the car will suddenly slow drastically and no throttle response, lift off the pedal and accelerate again and all is fine. If this happens more than once on a journey the above code is logged but no mil. Normal town driving the car seems perfect although ever so slightly underpowered for this engine. I have checked the fuel pressure and flow rate from the in tank pump as per Elsawin, both ok. Next I was going to check sensor G247 and its wiring but as the sensor is in the lower manifold which has to be removed I did not have time today. I am also thinking that I should try and research this problem a bit more before I jump into that job. The info on this fault seems very limited so I am hoping somebody has come across it before. Also, there is a pump control unit in the wiring to the pump unit can that cause problems? If so how do I test it? How do I test the high pressure pump on the cam cover? Is the possible a high pressure pump fault or in tank pump fault would cause this fault code? Thanks in advance for any help with these questions, Colin.
Thanks Barry. Had that info already from Ross tech. Today I tried replacing the tank pump then the high pressure pump, no difference both times. I have removed the upper part of the manifold which gives me access to the pressure sensor. Checked wiring to sensor, ok. Have ordered a new sensor from TPS which I'll fit tomorrow. Will post results. Thanks again, Colin.
This job was taken out of my hands when my boss told me as I was getting nowhere with it send it to the dealers. New pressure sensor didn't make any difference, but I will post any info I get on the dealers findings. Thanks anyway, Colin.
Dealer updated software original s/w no. 000 5697 new s/w no. 000 9265
We were told to replace the in-tank pump as there were issues with the type fitted to this car [I had already swapped the unit with one from another car]
Here are the problem pump unit part nos.
Touran 1T0919051 A or C replace with 1T0919051 F
Golf 1K0919051 N or A replace with 1K0919051 BE
We were also informed that the software update and pump unit replacement must both be done with regards to the code 16575.
Technical background. Because of insufficient degassing, gas can be locked in the fuel pump. This leads to an unstable supply of the fuelpump or to a hydraulic problem in the low pressure fuel system and thus to an insufficient pressure build-up in the high pressure fuel system.
Here are the measuring blocks that need to be checked.
on December 9, 2009, 4:04 pm, in reply to "