fabia88

the diaphragm and flap I referred to is circled in blue, what I did is disconnect the vacuum line and and move the flap arm back and forth with a bit of wd40 to free it up. However your problem seems a little different,my car went into limp mode every few hundred miles whilst yours is constant. This combined with the rough running from what I understand suggests the egr valve itself is stuck partially or fully open which is indicative of a mechanical failure or seizing of the valve which sits on the left of the unit in the photo. Again from what I know as a amerture DIYer this is a common problem, happened on my 2.0tdi superb and on my parents 1.6tdi golf. I hope this information is of some help to you, I know how stressful it can be when things start going wrong with your car.

Hi there, sorry to hear your having so many issues with your car, before changing the egr valve I would first check the vacuum diaphragm operated flap on the egr valve is moving freely. On my car (2.0 tdi superb mk2 has same or very similar egr valve) the flap had seized and the car was going into limp mode and throwing egr valve codes. The only way I found out the egr had not actually failed was by running a test through vcds and checking the gears weren't stripped on the egr motor. If the egr has truly failed then regarding brands of parts I'm not sure which is best, I believe pierburg is the oem for vw group egr valves of this era but I'm not sure.

Hi everyone, I have now driven about 2000 miles since the fix and so far the car has not gone into limp mode again so it looks like the seized flap was the issue and may be something to check for anyone else who gets egr codes. I did however have the engine warning light come on, but it went off after a few restarts of the engine so will have to see if any codes are stored for that. Will give an update when I get time to do so.

Hi, similarly I am no mechanic however my understanding was that an oil flush is only really required if the engine has been badly neglected and is all sludged up inside.

Hi there, which engine does your car have?

Hi everyone, thanks for all the further information, I have since gone underneath the car and inspected the egr motor and gears inside, they are in perfect condition with no signs of wear and the valve appears to move, I also did a egr test through vcds and no errors were reported. However the arm which is connected to the flap actuated by the vacuum solenoid was seized solid and not moving, I applied some wd40 and moved the arm back and fourth until it moved freely. So far this is the only issue I can find with it.

Update: I have performed an egr valve test using vcds and it came back as successful which I find a little confusing considering the fact that I'm getting egr related fault codes. Also I was looking through some of the live data to see if there was anything abnormal and noticed that the temp sensor for the egr after cooler raw value was reading minus 270.6 degrees, that doesn't sound right, could it be this that is causing an issue?

Thanks for all the advice, I have removed the egr valve before when removing the exhaust manifold so I'm confident I can perform the task, just to check does anyone recommend a brand of EGR valve? Was looking on autodoc and saw a huge number of brands making them with prices ranging from £120 ish for ridex (never heard of this brand) to over £200 for some of the more well known brands.

I bought the car just over a year ago and the previous owner told me the emissions fix was done but couldn't tell me when, however that route may be a lost cause as I have been servicing the car myself so the goodwill warranty on emissions components may be void. Do you think it is worth going to the dealer to get the software updated ?

Hi, no I have not yet removed the valve, wanted to get a second opinion before going through the tedium of removing it.

Hi everyone, over the last 6 months I have been having intermittent issues with my car, about every 1000 to 2000 miles the car would go into limp mode with the glow plug light flashing with the code P0403 00 registered on the computer. It did this about 3 times but now the frequency of these events is increasing to every few hundred miles. Am I correct in saying the EGR valve is failing and requires replacement? Also I heard the EGR valve gears can be replaced with it in situ which is much cheaper and less time consuming than removal and replacement. I would much appreciate people's opinions about how to fix this issue and have attached a VCDS print out with more information. 01-Engine -- Status: Malfunction 0010 03-ABS Brakes -- Status: OK 0000 04-Steering Angle -- Status: OK 0000 08-Auto HVAC -- Status: OK 0000 09-Cent. Elect. -- Status: OK 0000 10-Park/Steer Assist -- 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 25-Immobilizer -- Status: OK 0000 42-Door Elect, Driver -- Status: OK 0000 44-Steering Assist -- Status: OK 0000 46-Central Conv. -- Status: OK 0000 52-Door Elect, Pass. -- Status: OK 0000 56-Radio -- Status: OK 0000 62-Door, Rear Left -- Status: OK 0000 72-Door, Rear Right -- Status: OK 0000 ------------------------------------------------------------------------------- Address 01: Engine (J623-CFFB) Labels:. 03L-906-018-CFF.clb Part No SW: 03L 906 018 JB HW: 03L 906 018 BR Component: R4 2.0l TDI H22 9978 Revision: 42H22--- Serial number: CVN: FF54D7C9 Coding: 00190012042500080000 Shop #: WSC 24066 210 00000 ASAM Dataset: EV_ECM20TDI01103L906018JB 003004 ROD: EV_ECM20TDI01103L906018JB.rod VCID: 73B3D1B70B3264A3C2D-8026 VINID: 91D4925470E4A122400890C6188BC20C1B 2 Faults Found: 4891 - EGR Valve (N18) P0403 00 [104] - Malfunction Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 2 Fault Frequency: 3 Mileage: 140327 km Date: 2022.08.30 Time: 09:37:38 Engine RPM: 2288.50 /min Normed load value: 69.4 % Vehicle speed: 112 km/h Coolant temperature: 92 °C Intake air temperature: 28 °C Ambient air pressure: 1010 mbar Voltage terminal 30: 14.220 V Unlearning counter according OBD: 39 Air mass: actual value (mg/stroke): 535.6 mg/stroke EGR Vacuum Regulator Solen.val.: activation: 100.00 % EGR Solen.val.: actual value: 86.78 % EGR valve: offset closed: 9.70 % Actuator for high pressure EGR: status-Bits 0-7: 0 Actuator for high pressure EGR: status-Bits 0-7: 55 Actuator for high pressure EGR: status-Bits 0-7: 7 Actuator for high pressure EGR: status-Bits 0-7: 0 High press EGR actuator: actual unconditioned volt val: 1105.4 mV 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: 140327 km Date: 2022.08.30 Time: 09:37:38 Engine RPM: 2288.50 /min Normed load value: 47.5 % Vehicle speed: 112 km/h Coolant temperature: 92 °C Intake air temperature: 28 °C Ambient air pressure: 1010 mbar Voltage terminal 30: 14.220 V Unlearning counter according OBD: 37 Air mass: actual value (mg/stroke): 454.3 mg/stroke EGR Vacuum Regulator Solen.val.: activation: 100.00 % EGR Solen.val.: actual value: 2.75 % EGR valve: offset closed: 9.70 % Actuator for high pressure EGR: status-Bits 0-7: 0 Actuator for high pressure EGR: status-Bits 0-7: 55 Actuator for high pressure EGR: status-Bits 0-7: 7 Actuator for high pressure EGR: status-Bits 0-7: 4 High press EGR actuator: actual unconditioned volt val: 3627.2 mV Readiness: 0 1 0 0 0 ------------------------------------------------------------------------------- Address 03: ABS Brakes (J104) Labels:. 1K0-907-379-60EC1F.clb Part No SW: 1K0 907 379 BD HW: 1K0 907 379 BD Component: ESP MK60EC1 H31 0108 Revision: 00H31001 Coding: 863D601609240003610E06EA901F0082300000 Shop #: WSC 33361 790 00053 VCID: 75B7EFAF05C67A93EC9-8020 No fault code found. ------------------------------------------------------------------------------- Address 08: Auto HVAC (J255) Labels:| 5K0-907-044.clb Part No SW: 3T0 907 044 AR HW: 3T0 907 044 AR Component: Climatronic H15 0401 Revision: 00005001 Coding: 0000000002 Shop #: WSC 33361 790 00999 ASAM Dataset: EV_Climatronic A01006 ROD: EV_ClimaAutoBasis_SK46.rod VCID: 025D847344885D2BD9B-8056 No fault code found. ------------------------------------------------------------------------------- Address 09: Cent. Elect. (J519) Labels:. 1K0-937-08x-09.clb Part No SW: 1K0 937 087 K HW: 1K0 937 087 K Component: BCM PQ35 H+ 103 0615 Revision: 00103 AD Coding: 48990AB8A05BF1C040080080110081E4427000AE532081605C0040000040 Shop #: WSC 33361 790 00999 VCID: 392F239F695EDEF3C81-806C Subsystem 1 - Part No: 3T2 955 119 A Labels: 1KX-955-119.CLB Component: Wischer 06101 26 0602 Coding: 00D7B7 Subsystem 2 - Part No: 1K0 955 559 AH Labels: 1K0-955-559-AG.CLB Component: RLS 121010 05 54 0403 Coding: 2730ED Subsystem 3 - Part No: 1K8 951 171 Component: DWA-Sensor 00 001 0104 Subsystem 4 - Part No: 1K0 951 605 C Component: LIN BACKUP HO H05 1501 No fault code found. ------------------------------------------------------------------------------- Address 10: Park/Steer Assist (J446) Labels:. 1Z0-919-475-V1.clb Part No SW: 1Z0 919 475 B HW: 1Z0 919 475 Component: PARKHILFE 4K H06 0006 Revision: -------- Serial number: 66641028120495 Coding: 100004 Shop #: WSC 33361 790 00999 VCID: 40D94E7B0A848F3B8FF-8014 No fault code found. ------------------------------------------------------------------------------- Address 15: Airbags Labels: 5N0-959-655.lbl Part No SW: 3T0 959 655 C HW: 3T0 959 655 C Component: J234__LAU VW10 HI 1918 Revision: 20014000 Serial number: 003K2PLELG6% Coding: 0016725 Shop #: WSC 33361 790 00053 VCID: 41DF4B7F0D8E8633801-8014 Subsystem 1 - Serial number: 6332MTS670342770 Subsystem 2 - Serial number: 6342MTS670472770 Subsystem 3 - Serial number: 6351HTS6CRHGF9KJ Subsystem 4 - Serial number: 6361HTS6P9GGF9KJ Subsystem 5 - Serial number: 63727TS6SM7DF9KR Subsystem 6 - Serial number: 00000000000000000 No fault code found. ------------------------------------------------------------------------------- Address 16: Steering wheel (J527) Labels:| 5K0-953-569.clb Part No SW: 1K5 953 521 AK HW: 5K0 953 569 B Component: LENKS.MODUL 009 0136 Revision: FF010039 Serial number: 20101008201265 Coding: 0082140000 Shop #: WSC 33361 790 00999 ASAM Dataset: EV_SMLSNGVOLWS A01004 ROD: EV_SMLSNGVOLWS.rod VCID: 76B5E8A31840718BE53-8022 Multifunction steering wheel control module: Subsystem 1 - Part No SW: 3T0 959 537 HW: 3T0 959 537 Labels: 3C8-959-537.CLB Component: E221__MFL-URO H07 0012 Coding: 800000 No fault code found. ------------------------------------------------------------------------------- Address 17: Instruments (J285) Labels:| 5K0-920-xxx-17.clb-SRI1 Part No SW: 3T2 920 941 H HW: 3T2 920 941 H Component: KOMBI H20 0420 Serial number: 00000000000000 Coding: 410B00 Shop #: WSC 33361 790 00999 ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04089 ROD: EV_Kombi_UDS_VDD_RM09_SK46.rod VCID: 3A2D3C936CD8D5EBC1B-806E No fault code found. ------------------------------------------------------------------------------- Address 19: CAN Gateway Labels:. 7N0-907-530-V1.clb Part No SW: 7N0 907 530 HW: 1K0 907 951 Component: J533 Gateway H27 5603 Revision: H27 Serial number: 111010F2001538 Coding: E9A07F0600020200003303 Shop #: WSC 33361 790 00999 VCID: 6D87C7CF6196B253149-8038 No fault code found. ------------------------------------------------------------------------------- Address 25: Immobilizer (J334) Labels:| 5K0-920-xxx-25.clb Part No SW: 5K0 953 234 HW: 5K0 953 234 Component: IMMO H20 0420 Serial number: 00000000000000 Coding: 000000 Shop #: WSC 00000 000 00000 ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008 ROD: EV_Immo_UDS_VDD_RM09_VW21.rod VCID: 6A8DCCD35CF8A56B71B-803E No fault code found. ------------------------------------------------------------------------------- Address 42: Door Elect, Driver (J386) Labels:. 8X0-959-793.clb Part No SW: 8X0 959 793 C HW: 8X0 959 793 C Component: TSG FA H09 0409 Revision: -------- Serial number: -------------- Coding: 011D0220D001001000 Shop #: WSC 33361 790 00999 VCID: 4DC7674FCDD65253749-8018 No fault code found. ------------------------------------------------------------------------------- Address 44: Steering Assist Labels: 1K0-909-14x-GEN3.clb Part No: 1K0 909 144 J Component: EPS_ZFLS Kl. 195 3001 Revision: 00H17000 Shop #: WSC 33361 790 00999 VCID: 313F1BBFBD2E16B3701-8064 No fault code found. ------------------------------------------------------------------------------- Address 52: Door Elect, Pass. (J387) Labels:. 8X0-959-792.clb Part No SW: 8X0 959 792 C HW: 8X0 959 792 C Component: TSG BF H09 0409 Revision: -------- Serial number: -------------- Coding: 011D0220D001001000 Shop #: WSC 33361 790 00999 VCID: 4CC16A4B36CC5B5B637-8018 No fault code found. ------------------------------------------------------------------------------- Address 56: Radio (J503) Labels:. 5M0-035-1xx-56.clb Part No SW: 3T0 035 156 C HW: 3T0 035 156 C Component: BOLERO 014 0029 Revision: -----28S Serial number: SKZ4Z3K1125441 Coding: 0D0004000004 Shop #: WSC 33361 790 00999 VCID: 2E0500C3A010094B6D3-807A No fault code found. ------------------------------------------------------------------------------- Address 62: Door, Rear Left (J388) Labels:. 8X0-959-795.clb Part No SW: 8X0 959 795 B HW: 8X0 959 795 B Component: TSG HL H06 0409 Revision: -------- Serial number: -------------- Coding: 010C00200001001000 Shop #: WSC 33361 790 00053 VCID: 4EC56043C0D0694B0D3-801A No fault code found. ------------------------------------------------------------------------------- Address 72: Door, Rear Right (J389) Labels:. 8X0-959-795.clb Part No SW: 8X0 959 795 B HW: 8X0 959 795 B Component: TSG HR H06 0409 Revision: -------- Serial number: -------------- Coding: 010C00200001001000 Shop #: WSC 33361 790 00053 VCID: 4EC56043C0D0694B0D3-801A No fault code found. End----------(Elapsed Time: 01:09, VBatt start/end: 12.1V/12.2V)-----------

Hi everyone and thanks again for all the advice and information. in the end I used some bilt hamber rust converter, then anti corrosion wax which I had around which should halt the corrosion. I would also like to warn people with a mk2 superb about a potential corrosion issue, on the floor pan around the spare wheel well and where the rear springs are, there was quite a bit of rust. This may not be an issue at this stage but could become one in the future if left untreated. I treated this rust in the same way as I did the subframe.

Hi everyone, thanks for all the advice and information, my car uses the m8 bolts, I have just bought a new set as I figure it's not worth the risk over £17, especially since the car often driven in a 'spirited' manner.

Thanks again for the advice but I have one last question, do you have to replace the bolts which attach the inner cv joint to the gearbox output shaft?

Great, thanks for letting me know, this is the first time I have removed a cv shaft and was worried that I had made a serious error.

Hi Everyone, I've been replacing the cv axle boots on my brother's mk2 fabia and everything has been going relatively smoothly however I realised in the haynes manual it states you should make an alignment mark where the cv shaft bolts to the gearbox output shaft. I forgot to do this and would like to know, how critical is it that the cv shaft bolts up with exactly the same orientation? Thanks in advance.

Not sure if it is found in the later mk2 fabias but the 1.4 16v naturally aspirated engine may be worth looking at, its faster than the 1.2 htp but still very economical and providing its been serviced properly I understand its very reliable too. I had one for 5 years and never had an engine issue, now my brother has it and its still going strong.

Hi there sorry to hear about you car troubles. Judging by the mileage your car has done the egr valve may have already been replaced. On my car which has the same engine as yours when the egr valve was replaced by the previous owner they damaged one of the coolant pipes going to the egr right where the clamp sits and made it look a bit like the egr cooler itself was leaking (to my relatively untrained eye). Maybe it would be worth inspecting the hoses be for going through the pain of removing the egr as it's not a very pleasant process.

I think darkside developments tested a bunch of tuning boxes on a rolling road, the results weren't very good if I remember correctly.

I you both may have to just agree to disagree on this one

Hi there, I currently have a 2.0tdi 140 hp superb and I feel it is adequate, it pulls pretty well even from low down which is handy, definitely would not want less power. Alternatively I guess you could get the 1.6 and remap it.

Hi there, I am sorry to hear your having car troubles. Regarding the sensor issue, maybe you covered this in a previous post I missed but was the magnetic ring corroded badly? If it was then the magnetic field produced by it will be lessened resulting in a weaker signal and possible error. Also, do you know if the brakes have ever overheated or got very hot? If they did its potentially possible the abs ring got slightly demagnetised again causing an error. One more possibility I can think of is if the wheel bearing is failing maybe the sensor ring moves further away from the sensor to play in the bearing causing it to feel a weaker magnetic field and thus throw an error.

Thanks for the advice, is owatrol like a rust converter which you can paint over? In the summer when I have some free time I'll remove/convert the rust, give it a coat of paint and spray some cavity wax inside, this may be a little over the top but it'll give me peace of mind that the subframe will remain solid.

Oops, my apologies, I thought I had posted it in the superb 2 section.

Hi everyone. I was having a look underneath my car the other day, just checking to make sure there was nothing obviously wrong before setting off on a 450 mile round trip. I noticed that the rear subfarame appears to have quite a bit of corrosion as seen in the attached photo. I think it could be related to the fact that I have spent the last year on the South Coast and the salt in the air is accelerating the corrosion. I was wondering, could this become an issue as I plan to keep the car for another 3 or 4 years?