Hi all,

this is my first post and i already need help please, here i recently got a Skoda roomster a few days ago and was fitting a Parrot Bluetooth system yesterday thanks to some great guides here. to get the live i piggy backed on a fuse form the glow plug system. unfortunately i started the car with the fuse out.

the car now thinks there is fault. i have now put the fuse back but the engine fault light and glow flashing light is still there is there a way to reset this?

i don't have a OBD cable at the minute and i am 50 miles away from work were i do have one :(, can this be reset by using any button combination trick? or am i stuck to go to the dealer, i don't want to risk the 50 mile journey to work to find if the fault is something else.

please help, thanks

I am not sure but i think that if you disconnect the battery for an hour it will erase the fault.

But as i already told you i am not sure and if you do it, it will be at your own risk.

thanks for that,

another thing is i just drove the car it not in limp home mode (just drove to 70mph with no problem and power loss), it drives fine and sounds normal. but according to the manual it should be in limp home mode, wondering if its worth the risk driving down to work called the dealer who say £86.40 just to scan the thing that is crazy i can do it for free at work :(

Edited 2 July, 201213 yr by choppaholic

I don't think that minor electrical problems drives ECU to limp mode. Once in my previous Octavia the brake switch broke down and EPC and EML lights came on and still car was not in limp mode.

There are a few issues in your case.

a. The ECU just kept the error in memory, error does not exist any more and thus no limp mode.

b. The fuse you used may be blown. A blown fuse cannot be seen by naked eye all the time.

c. Maybe the bluetooth system annoys ECU.

I 'll bet my money in a. You can also try List of VAG-COM Diagnostic System (VCDS) Owners I don't think it is times to spend ~90Gbp just for a scanning. Cardiologists do charge less for a heart scanning.

You didn't give the year/engine, but IIRC, the ECU doesn't monitor the glowplugs - just the relay.

The fuse for the glowplugs is the 40A fuse in position 6 of the fuseholder on the battery. Is this where you took the feed from?

Thanks guys, this is a lot of help very much appreciated. Just drove down to work all seems good will read out the code and update what it is.

Sorry I missed the model, first time on car forums

It’s a Roomster 3 1.9TDI 2007, standard no optional extras on it so a lot of fuses are empty

I took the feed of fuse number 28 I think or 29 it’s a 10 A fuse, both are marked with the engine symbol on the fuse card. I only got the glow plug flashing light with the engine malfunction light so thought it might be the glow plug fuse. Is there a way to tell what that fuse is for as the fuse card is not of much help, it has lots of fuses marked just with the engine symbol.

Thanks again guys for all you help

Fuse 28 feeds the N18 EGR valve, N75 Charge pressure control solenoid valve, G40 Hall sender and V157 Intake manifold flap motor.

Trying to start the car with the fuse out will have set a whole bunch of codes. I doubt the codes will clear or the light will go off.

Why didn't you use a spare slot in the fuse holder or an inline fuseholder to the 'live side' of the fuses? Tapping into an engine electronics fuse is a really bad idea. If you have a problem with the Parrot/wiring the engine will die.

Well the only on line manual including fuse box layout is this https://mediaportal....wnersManual.pdf

and the layout is at page 180. At page 179 is the fuse colour coding.

Unfortunatelly the manual is for the new facelifted Roomster, so again its on your own risk.

Then, if you have your original owner's manual, take a look at it and you will find out the right fuse for you.

Edited 2 July, 201213 yr by stratosg

Thanks again guys,

Rwbaldwin;

That sounds scary, I used a piggy back fuse like this one

http://www.emergencyequipmentshop.co.uk/piggy-back-fuse-bypass-p-424.html

which I thought was the same as an inline fuseholder to the 'live side'. Isn’t it?

I will relocate the fuse to may be wiper blades. That should save me some trouble. I known what you mean I have been kicking myself all morning why I touched an engine fuse. I read the guide of here to use a piggy back fuse only thing is I should have tapped of something else L.

Do you think if I just clear all the codes using an OBD scanner I will be safe? technically nothing really has gone wrong isn’t it? Hope I haven’t messed it up big time L

Thanks again guys,

Rwbaldwin;

That sounds scary, I used a piggy back fuse like this one

http://www.emergency...pass-p-424.html

which I thought was the same as an inline fuseholder to the 'live side'. Isn’t it?

I will relocate the fuse to may be wiper blades. That should save me some trouble. I known what you mean I have been kicking myself all morning why I touched an engine fuse. I read the guide of here to use a piggy back fuse only thing is I should have tapped of something else L.

Do you think if I just clear all the codes using an OBD scanner I will be safe? technically nothing really has gone wrong isn’t it? Hope I haven’t messed it up big time L

Provided that you plugged your piggy back socket in the correct way around, there should be no problem. The way to check is to plug in the fuse for the Parrot but not the original fuse. If it's the right way around, the Parrot will work. If the Parrot only works when both fuses are in, then it's plugged in the wrong way around.

You won't have done any damage. Once the codes are cleared, you will be fine.

thank you gents,

i have cleared the code and all seems well. cant believe the dealer wanted £86 for this.

heres a list of codes that were generate

6 Faults Found:

16706 - Engine Speed Sensor (G28): No Signal

P0322 - 35-00 - -

19557 - Shareware Version. To Decode all DTCs

P3101 - 35-10 - Please Register/Activate - Intermittent

17957 - Shareware Version. To Decode all DTCs

P1549 - 35-10 - Please Register/Activate - Intermittent

17849 - EGR Valve (N18): Open Circuit or Short to Ground

P1441 - 35-10 - - - Intermittent

19463 - Shareware Version. To Decode all DTCs

P3007 - 35-10 - Please Register/Activate - Intermittent

01314 - Engine Control Module

thanks all once again highly appreciated

16706 - Engine Speed Sensor (G28): No Signal

19557 - Intake manifold flap motor (V157): Open Circuit or Short to Ground

17957 - Boost Pressure Control Valve (N75): Open Circuit or Short to Ground

17849 - EGR Valve (N18): Open Circuit or Short to Ground

19463 - Camshaft Position Sensor (G40): No Signal

01314 - Engine Control Module: Check DTC Memory

The codes are pretty much as expected