2013 A4 - 10425 low fuel pressure during start AND 2837 Fuel Rail pressur too high

Suggestions what might be causing the 2 codes?
Where to start with troubleshooing?
40k miles.


Wednesday,10,January,2018,15:23:56:03761
VCDS Version: Release 17.8.1 (x64) Running on Windows 7 x64
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Address 01: Engine Labels: 06H-907-115-CDN.clb
Control Module Part Number: 8K5 907 115 J HW: 8K2 907 115 L
Component and/or Version: 2.0l R4/4V TF H09 0002
Software Coding: 4A2A0013242600062000
Work Shop Code: WSC 64544 001 1048576
ASAM Dataset: EV_ECM20TFS0118K5907115J 001003 (AU48)
ROD: EV_ECM20TFS0118K5907115J.rod
VCID: 3978A003B857238E96-806C
2 Faults Found:

10425 - Fuel Pressure too Low during Cold Start
P053F 00 [096] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 69314 km
Date: 2018.01.09
Time: 07:42:46

Engine speed: 2981.50 /min
Normed load value: 59.2 %
Vehicle speed: 53 km/h
Coolant temperature: 18 °C
Intake air temperature: 3 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 13.829 V
Unlearning counter according OBD: 38
Engine status: COENG_RUNNING
Engine oil temperature: 7.3 °C
Engine operating condition-Channel 87: Part. load
Relative load value: 105.70 %
Current system status: SYC_DRIVE
Engine torque: 248.8 Nm

2837 - Fuel Rail/System Pressure
P0088 00 [096] - Too High
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Mileage: 68792 km
Date: 2018.01.03
Time: 14:26:16

Engine speed: 2461.00 /min
Normed load value: 54.5 %
Vehicle speed: 64 km/h
Coolant temperature: 18 °C
Intake air temperature: 0 °C
Ambient air pressure: 980 mbar
Voltage terminal 30: 13.782 V
Unlearning counter according OBD: 31
Engine status: COENG_RUNNING
Engine oil temperature: 5.0 °C
Engine operating condition-Channel 87: Part. load
Relative load value: 107.30 %
Current system status: SYC_DRIVE
Engine torque: 211.2 Nm


Readiness: 0000 0100

Hi,
Not to sure regarding the low and high error code, but as I remember from Volvo way back in early 2000 models, their diesel engines rather often threw both the high and low pressure codes in common rail when the fault seemed to be clogged fuel filter. This can be caused be frozen water/dirt or just summer diesel in winter or very cold weather (diesel tend to separate out a wox like sediment, thats why we have "summer" and "winter" diesel, slightly different mixture in them).
I would first change filter as per manual. erase fault codes, and test.
If problem persist, You can try to test them.

Keep in mind that a common rail system has a high to very high pressure in them, so outmost caution shall be used when fiddling with this system

Petrol
You can use DIY cleaning of injectors to see if cleaning them lowers the internal leak, causing it/them to leak out one or more of them. Another option is to take them out and perform a injector squirt check (several videos on youtube), when out, you can also apply pressure from cleaning solvent to intake port and se if it leaks thru when no power is applied to injector.
Might also be worth checking the Fuel pressure sensor, by means of VDCS and if fluctuations is recorded by VDCS, test with an additional gauge, compare if recorded values from VDCS, this can tell if sensor is dodgy.
See hyperlink http://www.realoem.me/Audi/RDW/A4/2013/736/R/1/133/133030 As far as I know, this is a free site, and I do not think I do anything wrong posting a hyperlink to this

FYI regarding Diesel
Here it is often it is just a matter of disconnecting return line on top of each injector and place a hose from each injector to a bottle or similar (one for each injector). Remember to blank of hose/tube back to tank/collector tube, or else you can have reverse flow out the open hose/pipe.
I remember from my X5, that max allowed limit was 20ml over a minute, mine had 15ml on no#5 and 100ccl on no#6, this gave me start problems (that the workshop did not manage to find, over many many attempts, even when I asked for a specific leak test) found it myself by means of cutting 3mtr of 6 windshield washer hoses into 6, and 6 bottles of coke. did the measurement with help of a 150ml syringe.

Hope this might help you out a bit

Regards
Gremling

Thanks for chiming in. Does your suggested testing also apply to the high pressure direct injection engine (1500 psi or so) we are dealing with here?

Control Module Part Number: 8K5 907 115 J HW: 8K2 907 115 L
Component and/or Version: 2.0l R4/4V TF H09 0002

Click to expand...

Re-flash controller to stock...........and verify fuel not contaminated with water or scale.

Measure mechanicals of HPP during cold start and volume tests in addition to adequate lift pump output with static check of filter regulation.

Verify PSI sensor correlates to OBD reports.

Check fuel injectors for damage from wrong contaminated fuel used.

Add shot glass of marvel mystery oil & half shot glass or MOS2 oil additive "shaken not stirred" in gallon of gas with a half bottle of isopropyl gas additive........ then add to tank.

This strategy can be used in early diesel too but only two cups of gasoline added to all CR TDI.

Jack@European_Parts said:

This strategy can be used in early diesel too but only two cups of gasoline added to all CR TDI.

Click to expand...

This aint no diesel.

No shit that is why I said it can be done in both gas cars and diesel with special instructions for CR that read it ......

My post wasn't just for you it was to help all........

Jack@European_Parts said:

No shit that is why I said it can be done in both gas cars and diesel with special instructions for CR that read it ......
My post wasn't just for you it was to help all........

Click to expand...

- for those with 2 stroke and jet engines that read it: not sure if it can be done.
- for those with solid rocket fuel rocket engines that read it: I am sure it cannot be done.

Go ahead dismiss it .........but you are the one asking for help.

IDK maybe I have some experience in the field or something with things seen.

Are you not even aware of the corrosive affects of the USA fuels inside the fuel system via TSB?

I wouldn't state to do something if it can't be done without a significant benefit or verified testing.

Psssst ......... I wouldn't want to sound like an asshole ......NOPE yes I would!

http://forums.ross-tech.com/showthr...after-start-up&p=115263&viewfull=1#post115263

Hi, did you solve this?