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Author Topic: Engine Error Light - 'Efficiency Below Threshold'  (Read 2977 times)

Offline Kalpsn2000

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Engine Error Light - 'Efficiency Below Threshold'
« on: May 21, 2014, 10:32:08 am »
Hi guys

Not been on here for a while but need some advice. A couple of weeks ago the engine light came on...only just round to scanning it and the following error came up (still there after clearing).


Address 01: Engine        Labels: 06F-907-115-AXX.lbl
   Part No SW: 1K0 907 115 J    HW: 8P0 907 115 B
   Component: 2.0l R4/4V TFSI     0030 
   Revision: 5BH16---    Serial number:
   Coding: 040300031C070160
   Shop #: WSC 08708 803 00000
   VCID: 2D5735ABB4B420760F5-8078

1 Fault Found:
001056 - Catalyst System; Bank 1
               P0420 - 002 - Efficiency Below Threshold - MIL ON
             Freeze Frame:
                    Fault Status: 11100010
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 57355 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 08:09:16

             Freeze Frame:
                    RPM: 2354 /min
                    Load: 26.7 %
                    Speed: 95.0 km/h
                    Temperature: 85.0°C
                    Temperature: 9.0°C
                    Absolute Pres.: 1020.0 mbar
                    Voltage: 14.605 V


I've seen the Ross Tech page:
http://wiki.ross-tech.com/wiki/index.php/16804/P0420/001056

I've had a quick look around the engine bay...but not being an expert couldn't see anything obviously wrong.

Any advice as to what is the best thing to do or check?
Diamond Black 2007 (56) Golf GTI 3Dr DSG ¦ 18" Monza II's ¦ Cruise control ¦ MFSW ¦ Highline ¦ Rear parking sensors ¦ PDT Stage 1 ¦ Forge Twintake ¦ H&R Sport Springs ¦ NQSBBK ¦ R32 Rear bumper ¦ BCS Powervalve Sports R32 style TBE ¦ Valeo LED Rear Lights ¦ Xenon lights with HID kit ¦ DNX521DAB ¦ 12mm Spacers all round ¦

Offline bacillus

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Re: Engine Error Light - 'Efficiency Below Threshold'
« Reply #1 on: May 21, 2014, 03:03:38 pm »
If all looks ok under the bonnet then I would check for a faulty lambda sensor or an issue with your cat.

Are you mapped with stage 2 or above?

You can check your sensor by going into the engine module>basic settings and choose oxygen sensor aging test bank1. If you are not mapped or stage one, do bank 2 as well.

Without traction power is nothing!

Offline Kalpsn2000

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Re: Engine Error Light - 'Efficiency Below Threshold'
« Reply #2 on: May 21, 2014, 04:01:26 pm »
I'm only mapped to stage 1.

Ok will try the that in VCDS. Does it come back with a pass or fail?

Thanks
Diamond Black 2007 (56) Golf GTI 3Dr DSG ¦ 18" Monza II's ¦ Cruise control ¦ MFSW ¦ Highline ¦ Rear parking sensors ¦ PDT Stage 1 ¦ Forge Twintake ¦ H&R Sport Springs ¦ NQSBBK ¦ R32 Rear bumper ¦ BCS Powervalve Sports R32 style TBE ¦ Valeo LED Rear Lights ¦ Xenon lights with HID kit ¦ DNX521DAB ¦ 12mm Spacers all round ¦

Offline clemo

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Re: Engine Error Light - 'Efficiency Below Threshold'
« Reply #3 on: August 13, 2015, 08:36:22 am »
If all looks ok under the bonnet then I would check for a faulty lambda sensor or an issue with your cat.

Are you mapped with stage 2 or above?

You can check your sensor by going into the engine module>basic settings and choose oxygen sensor aging test bank1. If you are not mapped or stage one, do bank 2 as well.



Hi Did this get sorted ,  I have just fitter  a 200cel sports down pipe with cat to stock rear,  the other day i had the MIL light , can i sort this in VCDS

Offline Flyingscotsman

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Re: Engine Error Light - 'Efficiency Below Threshold'
« Reply #4 on: August 13, 2015, 09:09:47 am »
You can reset the MIL light using VCDS but if the resaon it came on is that you have a de-cat or a sports cat fitted,  then it is likely to come back on again unless you get the lambda sensor mapped out or fit a lambda spacer.