P0193 fuel pressure sensor Mk6 TDI

   #21  

dzubot

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I got car back from the dealership. Technician found two faults. P0193 and P0191. I’ve seen the 191 code but seldom. The tech found low fuel levels in the fuel filter canister indicating the fuel pump in the fuel tank is intermittent or not working as it should. They recommend to replace this pump. Also says if this pump has failed in any way that it will not show any codes indicating it has failed.

I’ve ordered one through local shop will install tomorrow myself and report results.
 
   #22  

Jack@European_Parts

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Don't be too disappointed & when that doesn't correct a short to B+ DTC but I'll be here for you when you are ready to play the right way!

What about the boost pump under hood in route to filter assembly?

What is status of return regulation?

Did you sample the rail for metal?

16575/P0191/000401 - Fuel Pressure Sensor (G247): Implausible Signal
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Possible Causes
High/Low Fuel Pressure implausible
Low Fuel Level or Fuel Tank empty
Wiring and/or Connector(s) from/to Fuel Pressure Sensor (G247) faulty
Fuel Pressure Sensor (G247) faulty
Possible Solutions
Check Fuel Tank Level
Check Fuel Pressure
Check Wiring and/or Connector(s) from/to Fuel Pressure Sensor (G247)
Check/Replace Fuel Pressure Sensor (G247)
Special Notes
When found in VW Polo (9N) with 1.4l FSI (AXU), check TPI 2009218 which describes a problem with the Fuel Pump.
When found with the Common Rail TDI engine, check for signs of HPFP failure (metal shavings).
 
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   #23  

dzubot

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Yeah I hope i'm not too disappointed! Will let you know tomorrow.

I have been driving the car for 2 months since this issue first started and have burnt through about 10 tanks of gas. Issue started off happing infrequently then got more frequent as time passed, this is not typically how a short would happen, not that i'm used to. I've had wires short on aircraft and you get instant changes, not this slow progression of worse and worse driving conditions. It makes sense the engine is not getting enough fuel, as I have had the car stall on me several times lately while pressing on gas at stop lights, and jerky driving conditions, as though the engine is not getting steady amount of fuel. I really don't think it's an electrical issue at this point as I had a shop check the entire wiring system, they are vw pros. I also checked it myself with no cause for concern.

Yes the list does not indicate anything to do with the pump in the fuel tank but we have tried now everything on this list.

There is NO metal shavings in the system, it has been checked several times, at the vw shop over the last two months and the dealer checked today, i've also checked many times, never any metal shavings in the system.

Hoping this is the fix, then this list of plausible issues for code P0191 needs to include the gas tank lift pump.
 
   #24  

Jack@European_Parts

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I wish you luck anyway......... :p

Let us know if the lift pump module screen has biological's in it?
 
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dzubot

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Issue is fixed! Not by a lift pump but because of a bad ground wire.

So to start this issue first started about 2 months ago on the hwy went into limp mode. It progressively got worse, to the point it would not go out of limp mode. During this time I checked the voltage to the sensor multiple times always getting 5v, I even checked it couple days ago and saw 5v but today I checked it again just for the fun of it, only getting .6v. So I hooked up a temporary ground and the voltage jumped to 5v. I've installed a new permanent ground to the sensor and no more limp mode or P0193/P0191 code!!

Pretty insane that this took 4 visits to volkswagen shops, $2k of parts, and in the end cost me maybe $1 in parts to solve. I hope this helps someone else out there.
 
   #27  

Jack@European_Parts

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LOL and you thought we were fucking with you huh OP?

If you would of opened your mind a while back & listened to well great responses before I even entered, things would of been fixed a long time ago, huh?

Don't you think you should sue who tested and changed shit that didn't need replacing?

Yup this is FOD!
 
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