MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: mcr on October 04, 2014, 05:40:47 pm

Title: EPC & Engine warning lights
Post by: mcr on October 04, 2014, 05:40:47 pm

Hi all,

I'm having an issue with my '05 MK5 GTI

This morning when driving to town, I noticed the EPC light had come on, so I pulled over and restarted the engine. The light came on after a few seconds followed by the engine light. There is no warning text on the screen though so I turned around to get the car home which was about 2 miles. On the way back, I noticed that I wasn't able to accelerate like previously. It is as if there is a limiter to reduce the performance or something.

The work done to the car recently by a VW garage is a new intercooler hose (the last one was leaking apparently), new front disks and pads plus front bearings and CV boots.

I had a VagCom some time ago but I cannot find it, if I do I will paste the errors on here

In the meantime does anyone have any suggestions on what this might be?

Title: Re: EPC & Engine warning lights
Post by: byron on October 04, 2014, 06:03:31 pm

I had it with mine as a misfire, new coil packs did it. But it could be all manor of things!

Title: Re: EPC & Engine warning lights
Post by: flashp on October 04, 2014, 11:28:47 pm

I had similar happen and it was the throttle body.

Title: Re: EPC & Engine warning lights
Post by: Scottymon on October 05, 2014, 12:28:07 am

Could be worth checking the intercooler hose.

But the EPC light is usually a dead throttle body, scan it to be sure, then replace with a Revision Q.

Title: Re: EPC & Engine warning lights
Post by: pd9264 on October 05, 2014, 09:08:40 am

I had same with me and it was the plugs. I had the nology silver ones in. Took them out and put some ngks in and never done it again.

Title: Re: EPC & Engine warning lights
Post by: mcr on October 05, 2014, 01:21:17 pm

I'm hoping it wont be too expensive! I still can't find that VagCom device, I've looked everywhere!
I don't supposed there is anyone on the Isle of Man with one? :)

Title: Re: EPC & Engine warning lights
Post by: mcr on October 07, 2014, 06:27:57 pm

Both lights have remained off since yesterday and I haven't changed anything! - This feels like good news but is there something I should do to check everything is okay - Maybe the garage knocked a sensor or something when fitting the inter-cooler hose?

Title: Re: EPC & Engine warning lights
Post by: byron on October 07, 2014, 11:42:53 pm

Could be ton of things I suppose, maybe it was just feeling temperamental?  :fighting:

Title: Re: EPC & Engine warning lights
Post by: mcr on October 10, 2014, 11:52:30 pm

I ended up buying a new Micro-CAN so I have some results:

There are minor issues with the automatic windows and radio which I won't bore you with here  :smiley: , so this is just the engine section of the log:


Address 01: Engine        Labels: 06F-907-115-AXX.lbl
...xyz..

2 Faults Found:
000665 - Boost Pressure Regulation
               P0299 - 002 - Control Range Not Reached
             Freeze Frame:
                    Fault Status: 01100010
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 132186 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 16:38:31

             Freeze Frame:
                    RPM: 2700 /min
                    Load: 79.2 %
                    Speed: 72.0 km/h
                    Temperature: 69.0°C
                    Temperature: 21.0°C
                    Absolute Pres.: 960.0 mbar
                    Voltage: 14.224 V

008504 - Accelerator Position Sensors (G79) / (G185)
               P2138 - 008 - Implausible Correlation
             Freeze Frame:
                    Fault Status: 01101000
                    Fault Priority: 0
                    Fault Frequency: 8
                    Reset counter: 255
                    Mileage: 133303 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 12:06:05

             Freeze Frame:
                    RPM: 1032 /min
                    Load: 37.6 %
                    Speed: 0.0 km/h
                    Temperature: 44.0°C
                    Temperature: 30.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 14.224 V

Readiness: 0000 0000


Any help would be great!

Thanks

Title: Re: EPC & Engine warning lights
Post by: Scottymon on October 11, 2014, 12:13:31 am

1st one is no doubt a split DV, visiually check it... or boost pipe popped off.

2nd one, throttle pedal foo