MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Kalpsn2000 on May 21, 2014, 10:32:08 am

Title: Engine Error Light - 'Efficiency Below Threshold'
Post by: Kalpsn2000 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?

Title: Re: Engine Error Light - 'Efficiency Below Threshold'
Post by: bacillus 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.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fwww.ross-tech.com%2Fvcds%2Ftour%2Fscreenshots%2Fbasic-settings-uds-select.png&hash=7b4f58156ea116e6a34fbe2670d62c96fb172622)

Title: Re: Engine Error Light - 'Efficiency Below Threshold'
Post by: Kalpsn2000 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

Title: Re: Engine Error Light - 'Efficiency Below Threshold'
Post by: clemo on August 13, 2015, 08:36:22 am

Quote from: bacillus 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.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fwww.ross-tech.com%2Fvcds%2Ftour%2Fscreenshots%2Fbasic-settings-uds-select.png&hash=7b4f58156ea116e6a34fbe2670d62c96fb172622)

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

Title: Re: Engine Error Light - 'Efficiency Below Threshold'
Post by: Flyingscotsman 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.