Failed MOT

Bowders1 · 19-05-2008, 18:09

Ok Folks help appreciated.

Mot failed for emmisions slightly too high.

As I have a turbo back blue flame system with sports cat, was told this was the cause?
It is a sports cat, I though it should still do the business of controling emisions.

I also thought that maybe Lambda sensors could be a cause. These are still the original fitted.

reviewed the Vagcom and got error code 463A which states Engine Control unit blocked. I have a ECU remap but thought that the ECU could still be read and interogated.

Also had errors

412C - Missfire detected
412D - Cylinder 1 missfire

Anyone had these errors and can advise what they did to fix them.

Plugs / Coils I am thinking.

Plugs are not that old and coils are the Hitachi bolt down so would of thought they were ok.

Maybe I need to re gap the plugs for a remapped car.

Appreciate any help.

**mannyo** · 19-05-2008, 18:17

My old vRS with a sports cat barely passed the MOT on emissions, and even then the engine needed to be nice and hot from a spirited drive. Best thing would have been to take it for a short spirited drive, and test it again and it will proberbly pass, mine did.

martziniuk · 19-05-2008, 18:18

If you have a misfire it will put unburnt fuel down the exhaust and certainly won't help emissions.
Yes you should be able to communicate fully with the ecu even with remap.

**mannyo** · 19-05-2008, 18:20

The thing is those errors could have been from an earlier problem and no longer current. If you clear them and they come back then it maybe a problem.

martziniuk · 19-05-2008, 18:55

You can log misfires in vag-com block 015, 0= ok , 1=misfire. If your a registered user.
Think this is right, I'm sure Mr Ethos will correct me if I'm wrong

.

Octavia Vrs! · 19-05-2008, 19:16

My MOT was mighty close with the same system. I think the printout showed 0.20 max limit (don't know the units) and mine was 0.19

Not sure what my electronic boost controller was set at tho as this also adjusts ignition timing so tyring that in a few different possitions may help next time.

Would blocking the air filter a bit make any difference causing the ECU to reduce fueling? A stab in the dark but thought i'd see what others thought.

Let us know how you get on please and good luck - i'm dreading my next one.

martziniuk · 19-05-2008, 19:23

My blueflame fast idle co level was 0.16%, max allowed 0.20 so they certainly pass.
My natural idle test was 0.29, max allowed 0.30

Octavia Vrs! · 19-05-2008, 19:28

Quote:

Originally Posted by martziniuk

My blueflame fast idle co level was 0.16%, so they certainly pass.
My natural idle test was 0.29, max allowed 0.30

I suspect its got more to do with the remap than the exhaust. Your also very close on idle

claytarget_god · 19-05-2008, 19:31

OMG ive got mine on friday, I have a 200cell sports cat and a remap, Ill see ho it goes

oh boy

martziniuk · 19-05-2008, 19:33

200cel should sail through mate.
100 cel jobs are the ones to watch out for.

martziniuk · 19-05-2008, 19:34

Quote:

Originally Posted by Octavia Vrs!

I suspect its got more to do with the remap than the exhaust. Your also very close on idle

sugar, I've got a more aggressive map since then

Octavia Vrs! · 19-05-2008, 20:18

Yeah mines 100 cell. A more aggresive map should make no difference to your idle reading.

mattbeef · 19-05-2008, 20:27

The tester should know this but make sure that the climatronic is turned off as this can cause it to fail.

Also as mannyo said go and rag the nuts off it so thats its nice and hot and you should pass it

Octavia Vrs! · 19-05-2008, 20:35

Quote:

Originally Posted by mattbeef

Also as mannyo said go and rag the nuts off it so thats its nice and hot and you should pass it

What on the public roads?! Can't be doing that

Bowders1 · 19-05-2008, 21:47

Mine went up to max allowed 0.20 and would of probably carried on if they did not stop it.

The MOT station is only 5 min away from my house so I may try a longer drive around first.

I did reset the vagcom and cleared the errors, will recheck tomorrow. Car did splutter a bit today so errors may well come come back again. Will check plugs and coils later. Could be linked to the high readings a stated.

auroan · 20-05-2008, 09:10

What version of Vag-com software/cable do you have. Blocked ECU usually means your using the freeware version.

hussarman · 20-05-2008, 09:32

How common is this problem? One EPA study found that 70 percent of the vehicles that failed an I/M 240 emissions test needed a new O2 sensor.

19-05-2008, 18:09	#1
Bowders1 Briskodian Join Date: Apr 2007 Location: Hampshire Posts: 137	Failed MOT Ok Folks help appreciated. Mot failed for emmisions slightly too high. As I have a turbo back blue flame system with sports cat, was told this was the cause? It is a sports cat, I though it should still do the business of controling emisions. I also thought that maybe Lambda sensors could be a cause. These are still the original fitted. reviewed the Vagcom and got error code 463A which states Engine Control unit blocked. I have a ECU remap but thought that the ECU could still be read and interogated. Also had errors 412C - Missfire detected 412D - Cylinder 1 missfire Anyone had these errors and can advise what they did to fix them. Plugs / Coils I am thinking. Plugs are not that old and coils are the Hitachi bolt down so would of thought they were ok. Maybe I need to re gap the plugs for a remapped car. Appreciate any help. __________________ Skoda Octavia VRS - Mod's : BlueFlame Exhaust System Turbo back, Forge 007PDV, ABD Induction CAI, Remap, ECS N75 valve, Hitachi Coil Packs, Blue Silicon Hoses, Audi S3 Upper /Lower strut Braces, Whiteline Rear ARB, Koni FSD's , H&R Lowering Springs, Audi RS4 18" Wheels, Polished Inlet manifold, Poweflex Engine mount, Wishbone Bushes, SAT NAV install, Reversing Sensors, Bonnet Lifters, Seat Cupra R Splitter, Milotec Bumper Grills and Rear Diffuser, Audi TT arch Mod.

19-05-2008, 18:17	#2
mannyo BRISKODA Staff Join Date: Nov 2002 Location: Stevenage Herts. Posts: 10,322	Re: Failed MOT My old vRS with a sports cat barely passed the MOT on emissions, and even then the engine needed to be nice and hot from a spirited drive. Best thing would have been to take it for a short spirited drive, and test it again and it will proberbly pass, mine did. __________________ Manny 2005 Octavia 2.0TDi Elegance combi my skoda website http://www.octaviars.co.uk Join the briskoda.net folding team click Here for more info

19-05-2008, 18:18	#3
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,411	Re: Failed MOT If you have a misfire it will put unburnt fuel down the exhaust and certainly won't help emissions. Yes you should be able to communicate fully with the ecu even with remap. __________________ Regards Martin Turbo back blueflame exhaust ,Forge FMDV006 Dump valve, Autobahn88 TIP, CAI ,Remapped, FMIC soon..... SCN rolling road day 216.8bhp 264ft/lb (Dyno Dynamics)

19-05-2008, 18:20	#4
mannyo BRISKODA Staff Join Date: Nov 2002 Location: Stevenage Herts. Posts: 10,322	Re: Failed MOT The thing is those errors could have been from an earlier problem and no longer current. If you clear them and they come back then it maybe a problem. __________________ Manny 2005 Octavia 2.0TDi Elegance combi my skoda website http://www.octaviars.co.uk Join the briskoda.net folding team click Here for more info

19-05-2008, 18:55	#5
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,411	Re: Failed MOT You can log misfires in vag-com block 015, 0= ok , 1=misfire. If your a registered user. Think this is right, I'm sure Mr Ethos will correct me if I'm wrong . __________________ Regards Martin Turbo back blueflame exhaust ,Forge FMDV006 Dump valve, Autobahn88 TIP, CAI ,Remapped, FMIC soon..... SCN rolling road day 216.8bhp 264ft/lb (Dyno Dynamics)

19-05-2008, 19:16	#6
Octavia Vrs! Briskodian Join Date: Apr 2006 Posts: 292	Re: Failed MOT My MOT was mighty close with the same system. I think the printout showed 0.20 max limit (don't know the units) and mine was 0.19 Not sure what my electronic boost controller was set at tho as this also adjusts ignition timing so tyring that in a few different possitions may help next time. Would blocking the air filter a bit make any difference causing the ECU to reduce fueling? A stab in the dark but thought i'd see what others thought. Let us know how you get on please and good luck - i'm dreading my next one. __________________ There's nothing like seeing feathers going in the opposite direction to the bird! .......................................

19-05-2008, 19:23	#7
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,411	Re: Failed MOT My blueflame fast idle co level was 0.16%, max allowed 0.20 so they certainly pass. My natural idle test was 0.29, max allowed 0.30 __________________ Regards Martin Turbo back blueflame exhaust ,Forge FMDV006 Dump valve, Autobahn88 TIP, CAI ,Remapped, FMIC soon..... SCN rolling road day 216.8bhp 264ft/lb (Dyno Dynamics)

19-05-2008, 19:31	#9
claytarget_god Briskodian Join Date: Oct 2007 Location: Cardiff Posts: 313	Re: Failed MOT OMG ive got mine on friday, I have a 200cell sports cat and a remap, Ill see ho it goes oh boy __________________ Done: Forge FMIC,CAI,forge DV, Longlife 200cel Cat 2.5" cat-back, Whiteline 22mm ARB and S3 Front Lower Brace, Remap, LCR Front Splitter, Milotec front grills, 18" R32 Wheels. To Do: TIP, Front Bumper: Milotec Side Vents, Middle Grill Cut-Out, Milotec Rear Bumper Splitter, Weitec GT coilovers, SuperPRO Bushes, PowerFlex Dogbone Bushes

19-05-2008, 19:33	#10
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,411	Re: Failed MOT 200cel should sail through mate. 100 cel jobs are the ones to watch out for. __________________ Regards Martin Turbo back blueflame exhaust ,Forge FMDV006 Dump valve, Autobahn88 TIP, CAI ,Remapped, FMIC soon..... SCN rolling road day 216.8bhp 264ft/lb (Dyno Dynamics)

19-05-2008, 20:18	#12
Octavia Vrs! Briskodian Join Date: Apr 2006 Posts: 292	Re: Failed MOT Yeah mines 100 cell. A more aggresive map should make no difference to your idle reading. __________________ There's nothing like seeing feathers going in the opposite direction to the bird! .......................................

19-05-2008, 20:27	#13
mattbeef Needs Money Join Date: Apr 2006 Location: Sheffield Posts: 3,211	Re: Failed MOT The tester should know this but make sure that the climatronic is turned off as this can cause it to fail. Also as mannyo said go and rag the nuts off it so thats its nice and hot and you should pass it __________________ I few bits here and there but im happy to Performance Torque Go on click me you know you want to

19-05-2008, 21:47	#15
Bowders1 Briskodian Join Date: Apr 2007 Location: Hampshire Posts: 137	Re: Failed MOT Mine went up to max allowed 0.20 and would of probably carried on if they did not stop it. The MOT station is only 5 min away from my house so I may try a longer drive around first. I did reset the vagcom and cleared the errors, will recheck tomorrow. Car did splutter a bit today so errors may well come come back again. Will check plugs and coils later. Could be linked to the high readings a stated. __________________ Skoda Octavia VRS - Mod's : BlueFlame Exhaust System Turbo back, Forge 007PDV, ABD Induction CAI, Remap, ECS N75 valve, Hitachi Coil Packs, Blue Silicon Hoses, Audi S3 Upper /Lower strut Braces, Whiteline Rear ARB, Koni FSD's , H&R Lowering Springs, Audi RS4 18" Wheels, Polished Inlet manifold, Poweflex Engine mount, Wishbone Bushes, SAT NAV install, Reversing Sensors, Bonnet Lifters, Seat Cupra R Splitter, Milotec Bumper Grills and Rear Diffuser, Audi TT arch Mod.

20-05-2008, 09:10	#16
auroan Why me ? Join Date: Oct 2005 Location: North Yorkshire Posts: 2,344	Re: Failed MOT What version of Vag-com software/cable do you have. Blocked ECU usually means your using the freeware version. __________________ '96 AUDI A4 AVANT 2.6 V6 with a few modifications

20-05-2008, 09:32	#17
hussarman Briskodian Join Date: Sep 2007 Location: Essex Posts: 42	Re: Failed MOT How common is this problem? One EPA study found that 70 percent of the vehicles that failed an I/M 240 emissions test needed a new O2 sensor.

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