Audi A4 2.0 TFSI B7 fueling/misefires codes P0087 and P1093

[Riccardo]

For the last six months plus, while driving at any speed or any gear, random power losses/misfires for one or two seconds, with no pattern sometimes it does not do it for days and sometimes does it three times in a fourteen mile journey, with rev counter dropping and returning to normal again. Sometimes when accelerating from a stand still at a traffic light when I move off, the car seems to do what I can only describe as a huge misfire, I feel a large thud from the engine and the vehicle jerks forward violently then acts normal again so I can drive. Vehicle has had a minor Audi service March 2017b (also full Audi service history). 29th


April I fitted a brand new original Audi original part fuel filter. It seemed to improve things but.... I still see the random power loss/miss fires stutter. Straight after fuel filter change vehicle put on a computer, codes came up P0087 and P1093. (Re computer codes picture attached)



Reference code P0087 I googled results; https://www.obd-codes.com/p0087


Potential causes of a P0087 trouble code may include: Weak fuel pump, clogged filter or screen, restricted fuel supply line Faulty fuel pump driver module Faulty fuel pressure sensor.



Reference code P1093; http://wiki.ross-tech.com/wiki/index.php/17501/P1093/004243


P1093 - Bank 1; Fuel Measuring System 2: Malfunction

Possible Symptoms

Power Loss

Misfire(s)

Stalling


Possible Causes

Fuel Pressure insufficient/exceed/fluctuating

Fuel Pump (High Pressure System) faulty

Fuel Pressure Regulator Valve (N276) faulty

Possible Solutions

Check Fuel Pressure (on FSI engines High and Low Fuel Pressure System)


Check Fuel Pump (High Pressure System)


Check Fuel Pressure Regulator Valve (N276)


Check Fuel Filter and Filter in Fuel Pump Casing


Special Notes

When found in 2.0l TFSI<http://wiki.ross-tech.com/wiki/index.php/2.0l_TFSI_(AXX/BGB/BPJ/BPY/BWA)>:

    *   Check Fuel Pressure<http://wiki.ross-tech.com/wiki/index.php/2.0l_TFSI_(AXX/BGB/BPJ/BPY/BWA)#Checking_Fuel_Pressure>
    *   Check TSB/TPI 2008753 (Rest of World), incompatibility between Fuel Pressure Regulator Valve (N276) and ECU software.
    *   When found in conjunction with Misfires and Lean fault codes, check RVUTB: 01-09-03 or 2018919 (NAR only) 2.0T (BPY), for updated Crankcase Breather Valve
       *   If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle



Maybe possibly need a new breather valve, high pressure fuel pump/cam follower, or fuel pressure sensor.

 

 

I've booked my vehicle to go to Audi specialist Les Paul's for first time and I hope they can fix issue as quick as possible. 

[Trevor]

I would be putting my money on the Fuel Pump intermittently failing....worth checking electrical connections to it first

[Riccardo]

Hi. Ok collecting my vehicle today. I've got mixed feelings. Garage said. They've tested the hell out of my car for two or three days all the top bosses/qualified mecanic's have looked at it. They found that my vehicle has the old PCV breather valve. I knew audi did a revised version as the original caused a lot of problems such as what I'm having in 2.0 TFSI engines. But only negative they do not sound 💯if this is the cause of my woes and informed me to bring it back in if problems persist. 

[Trevor]

Keep us updated on how it all goes and whether the problem persists

[Riccardo]

Ahhhhh 25th 26th and 27th may issue has come back very frustrating. Bringing car back to them in seven days time for them to look at it again I'm stressed out. 

[Magnet]

Possibly the fuel pump relay?? 

Good  luck with getting it sorted.

Kind regards,

Gareth.

 

[Riccardo]

2 hours ago, Magnet said:

Possibly the fuel pump relay?? 

Good  luck with getting it sorted.

Kind regards,

Gareth.

 

What's annoying is the issue is random it won't do it for days then come back and do it two or three times then vanish again so when I bring it to mecanic's they can't replicate fault and seems like they guessing. I've never exeperiened anything like it before on a car. 😡

[Magnet]

"Random", "varnishes", well, that is exactly what you might expect with electrical issues, where such things as contact resistance varies according to damp or dry conditions, vibrations etc. and may, or may not cause problems at one time and not another. 

Not sure what age group you are, but never having experienced anything like it before sounds as if your motoring to date has been one of good fortune! 

Kind regards,

Gareth.

 

[Riccardo]

3 hours ago, Magnet said:

"Random", "varnishes", well, that is exactly what you might expect with electrical issues, where such things as contact resistance varies according to damp or dry conditions, vibrations etc. and may, or may not cause problems at one time and not another. 

Not sure what age group you are, but never having experienced anything like it before sounds as if your motoring to date has been one of good fortune! 

Kind regards,

Gareth.

 

This my Audi my 4th car numerous issues and money spent. 1st car was 1988 1.6 a sexy black ford escort mk4 gia leather seats, alloys the works (only issue the full tank level was broken lol). 2nd 1997 1.6 another black ford escort mk6 si body kit from mondeo, black alloys, induction kit, piper back box etc etc lost to long to post. Then 3rd sexy 1999 black golf GTI mk4 owned for eight years it had minor issues like the front sus brushes needed changing every two year (grrrr government and their speed bumps kiss my teeth) mass air sensor changed twice etc minor things, with this Audi it's been nothing but time, money, heartache and stress (technically had two Audi's scarpped the one same car and model oil chain pump failure on both Audi's). So last two and a have years I've been trapped in a nightmare. 

[Magnet]

Hi Richard,

Interesting background, but I'm a bit lost as to where these photos fit in with your current problem for which you are asking for advice on what may be causing your issues.

As I see it, the best that can be done on here is to offer some advice on what the causes could possibly be - and  it's generally a stab in the dark - and leave it to be dismissed or followed up on, as the case may be. 

It would be interesting to know how you sort it/have it sorted in the end.

Kind regards,

Gareth.

[Riccardo]

12 hours ago, Magnet said:

Hi Richard,

Interesting background, but I'm a bit lost as to where these photos fit in with your current problem for which you are asking for advice on what may be causing your issues.

As I see it, the best that can be done on here is to offer some advice on what the causes could possibly be - and  it's generally a stab in the dark - and leave it to be dismissed or followed up on, as the case may be. 

It would be interesting to know how you sort it/have it sorted in the end.

Kind regards,

Gareth.

25/5/17, 26th, 27th problem came up but since then vanished I will keep monitoring, I'm half tempted to call up mecanic and cancel my 3/6/17 vehicle booking (I really don't want to spend anymore money 🙈😅)

[Magnet]

Thanks Richard.

I'm really still none the wiser whether my suggestion is going to be taken on board and eliminated or not!  At least you have been offered some possible advise I guess, and I can't see anyone can do much more than have such a stab at it at a distance, and try to eliminate all possibilities as you go along. 

As I say, good luck with sorting it. 

 

[Riccardo]

I found this last night;

 

Re codes p0087 and p1093 vw technical bulletin, re excessive wear of intake camshaft lobe that drives high pressure fuel pump. The wear on the camshaft lobe can lead to wear on the base of the high pressure fuel pump cam follower. 

 

http://www.goapr.com/images/support/tsb/15-09-03 (2015153) 16 Dec 2009 - MIL ON, DTC P0087, P1093 or P2293.pdf

 

 

[Riccardo]

 

Other people with the issues in 2012, one guy named ANONYMOUS A4 different fault codes but same symptoms as me. replaced many parts for new and cleaned engine out and still the power loss and stuttering issue remained. A few suggestions here some suggest faulty MAF sensor fix?

 

http://www.audizine.com/forum/showthread.php/485837-Problem-With-TFSI-Power-Loss

[Riccardo]

 

 

Ok I have my vehicle back now collected 08/07/17 after five weeks of patiently waiting while using horrible public transport to work. They changed a breather valve vent hose, adaptor re oil housing, crank sensor. Checking fuel pump, pistons, camshaft for wear none found (diagnosis costed in as well). 

 

I will run the vehicle and see if the problem has finally been resolved fingers cross. 

 

 

On collection I spoke with one of the managers Kevin Gallagher at Les Pauls motors who gave me a good will discount of roughly £200 being sympathetic of my stresses and the amount of time the repair took leaving the total at a reasonable £400 which I was very grateful for. 

 

 

Fingers crossed the problem been resolved.

[Alecoder]

Ricardo

I am experiencing the same issue as you did. Here is a video i recorded please watch it Here. Did you fix it finally and can you give me any suggestions ?

[MarcR]

Hi Ricardo,

Any luck solving your issue as I am having the same issue with a 2008 A3?

Thanks,

Marc.