Coil Fault light on dash - limp mode. EGR?

Chris90

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Hi

Used car after being stood for around a week today, about 2.5miles into my trip, met with a coil light flashing on rev counter and no power. Thankfully, ignition cycle cleared the limp mode and car worked fine for last 40miles of trip.

Got chance to plug it in and get 4 faults on engine, 2 non-communications and 2 intermittant EGR faults. Tried looking on ross tech fault codes site but not listed strangely.

I know there are a few people on here with a bit of diesel knowledge, far more than myself, so wondering if could give some pointers as to possible causes? Did catch a relatively large puddle about 2miles prior with left front wheel, so maybe thinking a tiny bit water ingress maybe.

Fault scan below.

Thursday,04,January,2018,20:26:19:09611
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 17.8.1.0
Data version: 20171130 DS276.6
www.Ross-Tech.com




Chassis Type: 8K-AU48 (8R0)
Scan: 01 03 05 08 09 15 16 17 19 2E 42 44 46 47 52 53 56 62 72 77


VIN: WAUZZZ8K9DAxxxxxxx Mileage: 77880km-48392miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: Malfunction 0010
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (J623-CGLC) Labels:. 03L-906-018-CGL.clb
Part No SW: 03L 906 018 JH HW: 03L 906 018 JL
Component: R4 2,0L EDC H25 2903
Revision: 45H25---
Coding: 0A194012242601080000
Shop #: WSC 06324 000 00000
ASAM Dataset: EV_ECM20TDI01103L906018JH 003003
ROD: EV_ECM20TDI01103L906018JH.rod
VCID: 79F303EDF8FCD98ED6-802C

4 Faults Found:
4698 - Function Restriction due to Faults in Other Modules
U1113 00 [032] - -
Intermittent - Not Confirmed - Tested Since Memory Clear

4708 - No Communications with HVAC Control Module (J301)
U0164 00 [032] - -
Intermittent - Not Confirmed - Tested Since Memory Clear

4891 - EGR Valve (N18)
P0403 00 [096] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear

4892 - EGR Valve (N18)
P0403 00 [096] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 77812 km
Date: 2018.01.04
Time: 15:15:46

Engine speed: 2353.00 /min
Normed load value: 57.3 %
Vehicle speed: 79 km/h
Coolant temperature: 62 °C
Intake air temperature: 11 °C
Ambient air pressure: 960 mbar
Voltage terminal 30: 14.220 V
Unlearning counter according OBD: 39
Air mass: actual value (mg/stroke): 631.7 mg/stroke
EGR Vacuum Regulator Solen.val.: activation: 34.81 %
EGR Solen.val.: actual value: 42.92 %
EGR valve: offset closed: 2.93 %
Actuator for high pressure EGR: status-Bit 0: 00000000
Actuator for high pressure EGR: status-Bit 16: 00000000
Actuator for high pressure EGR: status-Bit 24: 00110111
Actuator for high pressure EGR: status-Bit 8: 00000111
High press EGR actuator: actual unconditioned volt val: 2707.4 mV

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels:. 8K0-907-379-V1.clb
Part No SW: 8K0 907 379 CJ HW: 8K0 907 379 CJ
Component: ESP8 quattro H09 0100
Revision: -------- Serial number: --------------
Coding: 181544
Shop #: WSC 06325 000 00000
VCID: 030F61058230935E8C-8056

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393) Labels:. 8K0-907-064-05.clb
Part No SW: 8K0 907 064 FE HW: 8K0 907 064 FE
Component: BCM2 2.0 H10 0602
Revision: 00002001
Coding: 03B10000000000000000
Shop #: WSC 06325 000 00000
VCID: 78F506E9CBF6C086A9-802C

Subsystem 1 - Part No SW: 8T0 959 754 D HW: 8T0 959 754 D
Component: FBSAUDIB8 IDG H60 0072
Serial number: 0812000007530014

Subsystem 2 - Part No SW: 8K0 905 852 E HW: 8K0 905 852 E
Component: J764 ELV MLB H40 0046
Serial number: 2312000002761004

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels: None
Part No SW: 8K2 820 043 AC HW: 8K2 820 043 AC
Component: KLIMA 3 ZONEN H04 0122
Revision: D0000000 Serial number: 01310120121717
Coding: 342402E000
Shop #: WSC 06325 000 00000
VCID: 6AD12CA1855A62162F-803E

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 8K0-907-063.clb
Part No SW: 8K0 907 063 DG HW: 8K0 907 063 AG
Component: BCM1 1.0 H14 0103
Revision: 07014001 Serial number: 00000025901802
Coding: 260000118034AFC00081400000001D0D401D030827090201000008000400030100000024000000
Shop #: WSC 00783 210 84012
VCID: 77F705D5C6E8CFFEA0-8022

Subsystem 1 - Part No SW: 8K2 955 119 A HW: 8T2 955 119 Labels: 1KX-955-119.CLB
Component: WWS 250112 H06 0070
Serial number: SWF12010250214
Coding: 00FD11

Subsystem 2 - Part No SW: 8U0 955 559 B HW: 8U0 955 559 B Labels: 8U0-955-559.CLB
Component: G397_RLFS H06 0001
Serial number: 20131050
Coding: 02005D

Subsystem 3 - Part No SW: 8K0 941 531 AS HW: 8K0 941 531 AS
Component: E1 - LDS H03 0031
Serial number: 00000000001901123251

Subsystem 4 - Part No SW: 4H0 907 658 HW: 4H0 907 658
Component: AQ_Hum_Sensor H02 0002
Serial number: 87488C06000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:| 8K0-959-655.clb
Part No SW: 8K0 959 655 N HW: 8K0 959 655 N
Component: AirbagVW-AU10 H45 0610
Serial number: 003KFD90MJ6L
Coding: 30534435363030303030554A3052384B3053
Shop #: WSC 63301 000 1048576
ASAM Dataset: EV_AirbaECUVWAUDI010 003010
ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
VCID: 4895B629F396700619-801C

Crash sensor for side airbag: driver side:
Serial number: 6334MSME6A12397DO

Crash sensor for side airbag: front passenger side:
Serial number: 6344MSME6A133544A

Crash sensor for side airbag: rear: driver side:
Serial number: 6352QSME56693146H

Crash sensor for side airbag: rear: passenger side:
Serial number: 6362QSME0B6A124CO

Crash sensor for front airbag: driver side:
Serial number: 63732SME17683C50+

Crash sensor for front airbag: front passenger side:
Serial number: 63832SME17683376+

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527) Labels:. 8K0-953-568.clb
Part No SW: 8R0 953 568 Q HW: 8R0 953 568 Q
Component: Lenks.Modul H02 0171
Revision: 00000000 Serial number: 20120130001213
Coding: 000016
Shop #: WSC 06325 000 00000
VCID: 4FA79D351EF8A73E58-801A

Component: E221 - MFL H03 0003

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:. 8T0-920-xxx-17.clb
Part No SW: 8K0 920 982 B HW: 8K0 920 982 B
Component: KOMBIINSTR. H16 0640
Revision: 00100000 Serial number: M3B32GNDC
Coding: 331D090002012600010001
Shop #: WSC 06325 123 12345
VCID: 336FF1C59210E3DE5C-8066

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:. 8T0-907-468.clb
Part No SW: 8R0 907 468 A HW: 8R0 907 468 A
Component: GW-BEM 5CAN H10 0025
Revision: 1V040013 Serial number: 1341V12118863C
Coding: 00CF07FF00
Shop #: WSC 06325 000 00000
VCID: 3D7BD7FDA45425AEBA-8068

Subsystem 1 - Part No SW: 8T0 915 181 HW: 8T0 915 181
Component: J367-BDMHella H03 8041
Serial number: 7388956501

Subsystem 2 - Part No SW: 8K0 959 663 B HW: 8K0 959 663 B
Component: J532_DCDCStab H05 0006
Serial number: 12029000864021200410

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3 (R199) Labels:. 8T0-035-785.clb
Part No SW: 8T0 035 785 A HW: 8T0 035 785
Component: SG ext.Player H08 0290
Revision: 00000000
Coding: 020202
Shop #: WSC 06325 000 00000
VCID: 3973C3EDB07C198E96-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:. 8K0-959-793.clb
Part No SW: 8T0 959 793 F HW: 8T0 959 793 H
Component: TSG FA H09 0302
Revision: -------- Serial number: --------------
Coding: 011002204001410001
Shop #: WSC 06325 000 00000
VCID: 4C9D8A39EFEE9C263D-8018

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500) Labels:| 8K0-909-144.clb
Part No SW: 8K0 909 144 F HW: 8K0 909 144 B
Component: RCEPS H36 0507
Revision: 00001000 Serial number: 0021322952
Coding: 100000000001
Shop #: WSC 63301 000 1048576
ASAM Dataset: EV_RCEPSAU48X 008014
ROD: EV_RCEPSAU48X_008.rod
VCID: 346DF2D99F1EE4E645-8060

1 Fault Found:
2305 - Function Restriction due to Start Voltage Interruption
U1410 00 [008] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 142
Mileage: 75904 km
Date: 2017.12.07
Time: 05:56:26

valid


-------------------------------------------------------------------------------
Address 46: Central Conv. (J393) Labels:. 8K0-907-064-46.clb
Part No SW: 8K0 907 064 FE HW: 8K0 907 064 FE
Component: BCM2 2.0 H10 0602
Revision: 00002001 Serial number: 0168526440
Coding: 011F062200B900408020013680000000
Shop #: WSC 06325 123 12345
VCID: 78F506E9CBF6C086A9-802C

Subsystem 1 - Part No: 8K0 951 177
Component: DWA-Sensor H02 0040

Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525) Labels:. 8T0-035-223-BOC.clb
Part No SW: 8T1 035 223 HW: 8T1 035 223
Component: DSP Prem H04 0040
Revision: 00004001 Serial number: 94804001211301
Coding: 0203010302
Shop #: WSC 06325 000 00000
VCID: 6CDD2AB98FAE7C265D-8038

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387) Labels:. 8K0-959-792.clb
Part No SW: 8T0 959 792 H HW: 8T0 959 792 H
Component: TSG BF H08 0302
Revision: -------- Serial number: --------------
Coding: 011002204C01410001
Shop #: WSC 06325 123 12345
VCID: 4D9B873D14F4952E2A-8018

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----) Labels: 8K0-907-801-V2.clb
Part No SW: 8K0 907 801 J HW: 8K0 907 801 J
Component: EPB-4 H01 0001
Revision: -------- Serial number: 00000000017259
ASAM Dataset: EV_ParkiBrake 001022
ROD: EV_ParkiBrake_VW51.rod
VCID: 3669C8D18962F6F67B-8062

1 Fault Found:
464384 - Function Restriction due to Faults in Other Modules
U1113 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear


-------------------------------------------------------------------------------
Address 56: Radio (J503) Labels:. 8Tx-035-1xx-56.clb
Part No SW: 8R2 035 186 A HW: 8R2 035 186 A
Component: Concert3 DAB H05 0440
Revision: 00000005 Serial number: AUZ5Z6L1694807
Coding: 0403008201018D00875B070800
Shop #: WSC 06325 123 12345
VCID: 346DF2D9971EE4E645-8060

Subsystem 1 - Part No SW: 8T0 919 603 F HW: 8T0 919 603 F
Component: Display

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388) Labels:. 8K0-959-795.clb
Part No SW: 8T0 959 795 H HW: 8T0 959 795 H
Component: TSG HL H07 0302
Revision: -------- Serial number: --------------
Coding: 010002204001210001
Shop #: WSC 06325 000 00000
VCID: 50A59E4903C6B8C641-8004

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389) Labels:. 8K0-959-794.clb
Part No SW: 8T0 959 795 H HW: 8T0 959 795 H
Component: TSG HR H07 0302
Revision: -------- Serial number: --------------
Coding: 010002204001210001
Shop #: WSC 06325 000 00000
VCID: 50A59E4903C6B8C641-8004

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.lbl
Part No SW: 8T0 862 335 F HW: 8T0 862 335 E
Component: FSE_256x BT H45 0660
Revision: 00000000 Serial number: 00000005465496
Coding: 0010320
Shop #: WSC 06325 000 00000
VCID: 3D7BD7FD645425AEBA-8068

No fault code found.

End-------------------------(Elapsed Time: 03:39)--------------------------

Also had time to ping DPF readings through whilst had laptop out. Look a touch high.

(see image attached)

Maybe its worth setting a regen away and taking it down the motorway for a blast?


Thanks in advance.
 

Attachments

  • DPF.jpg
    DPF.jpg
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I wouldn't worry about it. You have the faults logged just see how it goes. Could well be the EGR valve was sticking a bit after the car has been standing. The DPF readings look OK, I would expect a regen in the next 2-300 miles depending on the mileage you do.
 
Yeah, hasnt skipped a beat before that. I think its just a 'one of those things'. But like you say, I have the faults logged and can reference them back if needed.

Was tempted to do a regen through VCDS to drop it down a bit more.

From my last check in February 2017, the readings were as follows.

Oil ash volume: 0.04L
Soot Mass Calc. : 13.36g
Soot Mass Measured: 11.03

So has increased a fair bit over the course of 10-11months. Apparently, if I do a regen then itll drop right down. Is this right?
 
The oil ash volume is a guesstimate value that increases based on the engine running and will increase slowly as the car does more miles. Oil ash cannot be removed by regeneration.
The calculated value is what the ECU has worked out from the engine operation and the measured value is a value determined from the DPF pressure sensor readings.
The last regen took place 381Km ago so about 240 miles ago and you have driven about 8.5 hours since the last regen so that's around an average speed of around 28mph. The ECU will decide when to regen usually around 30-35 grams of soot and this should drop to typically less than 10 grams after a regen.
 
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Happened again yesterday with the light on dash - limp mode and loss of any power. Resolved with a ignition cycle. Will guess its a EGR valve again without scanning the codes.

Is there any methods to clean these and is it a pig of a job to do?
 
Is there any methods to clean these and is it a pig of a job to do?

Remove it, get some brake cleaner and an old toothbrush and go to town....horrible messy job though!! Depending how bad it is you may need to scrape bigger chunks off first with a small screwdriver / scraper.
 
Oh I know it'll be messy, just whats it like for getting to? Is there any guides anywhere? Im a competant mechanic and built plenty engines before, but diesel is a new thing for me. Long as dont have to start removing 1/2 the side of engine down there for access
 
Did it again today in exactly same place as the first time.

Shame no easy way to delete egr with dpf in place or without a remap :(
 
Was hoping you would pop up Bobby - being the man for diesels :D

Yeah, CR170, CGLC engine code.

I always thought the EGR was part of the DPF regen pre-requisites?
 
I'm pretty sure the egr is a pre-requesite for dpf regeneration on the CR170, at least it was on my Passat CC.
 
I'm pretty sure the egr is a pre-requesite for dpf regeneration on the CR170, at least it was on my Passat CC.

Depends on how you kill the egr, but I've lost count on how many I done with no issues.
On these 1.6 tdi models 105hp engine (PCR ecu) the egr breaks all the the time for example - One guy told me VW said £700 to replace - crazy.
 
What way is it done on the CR engine like mine Bobby? My first option would be to attempt to clean it, if this is even possible with this age of EGR systems, if not, it would be a remove. I guess a tweak in the map for EGR cycle is needed if doing any type of delete?
 
What way is it done on the CR engine like mine Bobby? My first option would be to attempt to clean it, if this is even possible with this age of EGR systems, if not, it would be a remove. I guess a tweak in the map for EGR cycle is needed if doing any type of delete?
I'll send you a pm
 
Cool, got it.

Managed to get it on the computer and had the following codes:

sM07xT4.jpg


WhtdiRw.jpg


Readiness checks show the EGR system is failed or incomplete
u70I4yM.jpg


And some measuring value data for EGR on engine idle. No idea what any means but if its of any help to anyone...

zav7jdv.jpg
 
I'd say you have a stuck valve, due to it being clogged. It's a pig to get to it as right at the back of the engine. You'd also need some sort of bypass for the cooler it you were to delete it.
 
Just on the side above turbo on a A4 isn’t it?

Why can’t the cooler be deleted too?
 
Still doing it. Same place every day on way to work which is pretty strange. Never does it on way home tho lol.

I guess the cooler is fed off the water coolant pipes

Must be a sticky actuator on it as perfectly fine once cars warm.

Shame only way to delete it is with a tweak on the map.
 
Just to bring this back up. Still getting the egr issue and now a check engine light on the dash I need To look at.

Can the egr be deleted without having any limp mode all the time on the car?