What is telling you there is a code for low fuel pressure

 

The guy with the reader just advised that it only said low fuel pressure unfortunately didn’t give me a code, which is frustrating.

 

I’m wanting to get the pressure sensor tested but not sure what the reading should be in ohms?

 

Do you have VCDS or what are you using to read the code?

 

Hiya - It was just the local garage, he came with a snap on tool reader, unfortunately didn’t give me a code but did says it’s telling me low fuel pressure.

 

Get VCDS.

 

You can go about it blindly, but it will end up costing you way more than getting VCDS.
I assume you're working on a 3L TDI? Milage, condition? Known services? Last fuel filter change?
It could be really bad.... as in HPFP bad..... not a good idea to go into it blindly....

 

That’s the problem with him saying only the text the other half is trying to get a code reader from work to read again. He wanted to test the fuel pressure sensor but I can’t find the info on how to test it and what the output should be, if anyone knows?!
It’s always been serviced, was due a service, which it was booked in for, it’s on 140k miles, and yea the v6 altitude
It currently just won’t turn over now since the filter was changed but is parked on a steep driveway. (Not sure if that’s why the none start)
There was no fault codes previously to it stalling and only the one for low fuel pressure after the non start.

 

So I don't know who "HE" is, or what he knows, but if it's not TURNING OVER, it has nothing to do with any fuel pressure.
You or (he) is wanting to look at something that's not the issue.
Get a real mechanic to look at it (or someone with some mechanical inclination\aptitude) before it's too late.

 

He is a real mechanic, it turns but doesn’t start. Thanks for the reply.

 

The vehicle has some major problems.
Any time a fuel filter is changed, the fuel system needs to be primed.
The HPFP does not deal well with loss of fuel pressure.... neither do the injectors.
Everything you've said screams red flags... you need proper diagnostic\troubleshooting performed.
Quit trying to run what's left of the vehicle before it's too late!

 

The vehicle has some major problems.
Any time a fuel filter is changed, the fuel system needs to be primed.
The HPFP does not deal well with loss of fuel pressure.... neither do the injectors.
Everything you've said screams red flags... you need proper diagnostic\troubleshooting performed.
Quit trying to run what's left of the vehicle before it's too late!

Thanks for the above, I’m sure he would have done that, I’ve not been running the vehicle it’s parked up.

 

Fuel injectors or possibly just the copper sealing washers for them imho but as has been said it needs to be scanned with a decent diagnostic system like VCDS to confirm.

Try a bit of easy start into the inlet & see if it fires up.

 

Yeah I was thinking this possibly yesterday afternoon after watching a video relating to similar issues, the copper washer seems to be a common issue??
I will mention that to the hubby thank you.

 

Now you're mentioning something about a battery code. This is important. A TDI requires specific minimum cranking RPM in order to start. It could very well be that you're not cranking at the required speed, so the ECU isn't even trying to give the engine fuel as a result. The mechanic should know this, and should've looked at it.

Let me guess, you've never changed the battery on this?

 

It’s the code that read low voltage for the heater and central panel (where the radio is) assumes this is caused from several times trying to crank over but not starting over a period of a few days.
The battery was changed approx 3 months ago

 

Was the vehicle coded to the new battery?

 

No I don’t believe it was

 

That's a problem.... the BEM doesn't know you swapped in a new battery, and as such it didn't adjust the charging parameters.... you probably killed your new battery as a result. You need a better mechanic if this happened.

 

Yep.

So that could have easily caused the other issues? I’m sure there are no coding pattens on it! I will have a look! Like I said the wait time on the VW mechanic is crazy…so it’s a guy at a local garage, currently their wait time is almost 2mths!
thanks for dropping the video!

Local mechanics don't know how to work on $70k dollar specialized common rail German SUV's. Stop going to local mechanics.

 

Coding is a thing.... I'm not making it up

 

So that could have easily caused the other issues? I’m sure there are no coding pattens on it! I will have a look! Like I said the wait time on the VW mechanic is crazy…so it’s a guy at a local garage, currently their wait time is almost 2mths!
thanks for dropping the video!

 

I understand that you're in a bind, and that they expert who claims to be an expert may know more about vehicles than you and the hubby, but he appears to not know that much based on how this is unfolding. Quit messing around, and save yourself the money you're paying him to mess with it at your cost. Spent a little and get VCDS as it will allow you to at the very least post specific information about what you are faced with and peps around here will attempt to help\guide you.... when we rely on whatever he tells you (maybe true, maybe correct, maybe not), we are just going to guess and make you waste your time and money.

With VCDS you can easily see the condition of the battery among so many other things. You can also check if it was coded, it's charge state, etc.

 

Lisa, where are you in the UK?

Hi there in in the Nottinghamshire area

 

Lisa, where are you in the UK?

 

Lisa, get the interface off this user as it's a good buy

7L/7P Parts- Lift Spacers, Skid plate, Bilstiens and more

Ok. After 3 Toaureg TDI's I have decided to say goodbye. I have a lot of left over parts brand new. Pictures coming but unless stated, all parts are NEW. Some of the smaller items I will ship for free within the US. All prices are Firm Full set of Bilstein B4 shocks- $475.00 4x Upper Shocks...

www.clubtouareg.com

(no affiliation)

 

Hello,
I got a 2005 V6 that got 294,784 Miles, and a second owner. I bought in 2015 in Boston, flew there and drove 28hrs back to Minnesota. That is in 5,215 miles is gonna be 300,000 miles. I do have a short delay when cranking the engine, but when the battery pin or pointer gets to about 14.0 battery level, it starts.
I got codes P0016, 18, and 341 which are related to MAF
( Does P0016 OBD-II code mean? When a P0016 OBD-II generic code is triggered, it alerts the driver that the camshaft position sensor (CMP) for bank 1, which detects camshaft rotation, is not corresponding to the crankshaft position sensor (CKP) signal. )
Bank 2 ( P0018 code means. P0018 is the OBD-II generic code indicating that the camshaft position sensor A for bank 2 does not correlate to the signal from the crankshaft position sensor).

What the P0341 code means. P0341 is an OBD-II generic code that says the engine control module (ECM) detected the engine camshaft position sensor circuit is not within specifications. The sensor pulses do not correlate to the pulses of the crankshaft sensor.

In summary, what am trying to say is that 17years old with almost 300k miles, says a lot about regular maintainers of spark plus, air filter etc. the maintainer and you will be surprised what just a regular oil change can do and also changed of air filter, MAF sensor clean up or reply and battery replacement 4 years ago are the ONLY key changes or replacement. Also, the V6 engine is very reliable same used by Porsche Cayenne V6 and chassis.

My advice regarding your car not cranking, I suggest you take it to a VV dealership and get the right diagnosis, then pay for diagnosis fee ONLY, then toll with a flat bet to a local mechanic that will save you 75% cost if you can order required parts via Amazon or others and pay the local mechanic for the labour
I haven't spent or paid above $800 for any repairs thus far. I wish I was in Britain to help, but someone in the group should be closer to giving a helping hand.


Good luck.

 

Hello,
I got a 2005 V6 that got 294,784 Miles, and a second owner. I bought in 2015 in Boston, flew there and drove 28hrs back to Minnesota. That is in 5,215 miles is gonna be 300,000 miles. I do have a short delay when cranking the engine, but when the battery pin or pointer gets to about 14.0 battery level, it starts.
I got codes P0016, 18, and 341 which are related to MAF
( Does P0016 OBD-II code mean? When a P0016 OBD-II generic code is triggered, it alerts the driver that the camshaft position sensor (CMP) for bank 1, which detects camshaft rotation, is not corresponding to the crankshaft position sensor (CKP) signal. )
Bank 2 ( P0018 code means. P0018 is the OBD-II generic code indicating that the camshaft position sensor A for bank 2 does not correlate to the signal from the crankshaft position sensor).

What the P0341 code means. P0341 is an OBD-II generic code that says the engine control module (ECM) detected the engine camshaft position sensor circuit is not within specifications. The sensor pulses do not correlate to the pulses of the crankshaft sensor.

In summary, what am trying to say is that 17years old with almost 300k miles, says a lot about regular maintainers of spark plus, air filter etc. the maintainer and you will be surprised what just a regular oil change can do and also changed of air filter, MAF sensor clean up or reply and battery replacement 4 years ago are the ONLY key changes or replacement. Also, the V6 engine is very reliable same used by Porsche Cayenne V6 and chassis.

My advice regarding your car not cranking, I suggest you take it to a VV dealership and get the right diagnosis, then pay for diagnosis fee ONLY, then toll with a flat bet to a local mechanic that will save you 75% cost if you can order required parts via Amazon or others and pay the local mechanic for the labour
I haven't spent or paid above $800 for any repairs thus far. I wish I was in Britain to help, but someone in the group should be closer to giving a helping hand.


Good luck.

Thank you for your reply, crickey that’s allot of information!! Totally agree, it’s a mine field and just struggling to get some one to it! I’m still booked in for the end of June!

I’ve since in extraordinary circumstances bumped in to a friend who I haven’t seen in a long time, they have the full VAG software and said he would come and have a look for me whilst on the drive!! Hooray!! (he owns a garage in the next town)

He did come out and read it for me today, This afternoon. Actually and at first no codes, he explained common fault on these, as worked on a couple, he took off an injector end and screwed something to it to test them individually and then it threw a code for a fault on number 3!

it’s off on a flatbed tomorrow, he’s told me she should be running Friday - so fingers crossed 🤞

3 weeks feels like 3 months not running it at the moment!

 

Make sure you obtain a copy of whatever codes VCDS gives and post them up.... there's NO WAY that a cranking Touareg that doesn't start won't throw any codes that VCDS will pickup.... well... there's very few instances, but you definitely don't meet that criteria based on all you've said thus far.

 

What was the issue - my mates 7P has the exact same issue after changing fuel filter to the dot. Can you please update what was done to fix it ?

 

 

It sounds like it could be a failed HPFP. I don't think it is the pressure sensor. It would at least run if the pressure sensor was bad. Did you look at the fuel filter carefully for metal particles? Pull off the metering valve and look for metal particles. It is fast and easy. If you changed the fuel filter, the system needs to be bled with VCDS so that the HPFP has fuel, which is what lubricates it. If it runs dry it kills the HPFP, maybe not immediately but eventually. The failure is that the pump starts to grind itself up. The metal gets into the fuel system, and then gets into the injectors where they clog up. Fix is to replace HPFP, injectors, and clean or replace anything that touches fuel.

This happened to mine. It costs a lot to fix.

Let us know what happens. Hopefully all will be good and it is just a bad injector.

 

Its a failed injector and has been replaced but the excess fuel dumped in the exhaust system is smoking badly. Did few trips around the town and its getting better.

 

lucky you.
I would look at installing a disaster prevention kit just in case your fuel pump goes, it will save your injectors.