05 Octavia 2.0TDi

Hi, I've had my warning light on for 'Control system for exhaust'and fault code showed 'Throttle control motor' and an electrical fault.

Having read forum I followed advice for cleaning the said throttle control motor with carb cleaner and the valve appears to move fairly freely by hand.

I replaced blown fuse F24 in engine compartment (Activated charcoal filter, Exhaust Gas Recirculation valve)but the fuse immediately blows again.

Are the 2 events likely to be linked and any suggestions for remedy to blowing fuses?

Thanks in anticipation - Shiny

Hi Shiny,

I hope there was a happy ending to your story. How did you solve it eventually?

On my 56 2.0TDi I have the same error code P2108. If I replace fuse F24 it blows right away.

 

The saddest thing is I couldn't actually tell the loss of performance which probably means I'm getting old and boring.

 

Cheers!

more on this... I have been to a Skoda dealer and for £51 they had a look and it's the intake manifold (aka throttle body) - £493 fitted.

They said there's a known failure of this part and only their new model doesn't develop it.

They said leaving this on prevents regenerating of the DPF and soon you might have to change DPF too.

 

I have found this great video about how to replace the part yourself: 

And these parts to buy:

 - £362 - original Skoda part: http://www.skodaparts.com/product/octavia-a5-throttle-control-unit-2-0tdi-bkd-azv-04--26981

 - £176 - Pierburg part from eurocarparts

 - £126 - Vemo part from eurocarparts

 

I'm not a mechanic but this doesn't look like a very difficult or risky thing to DIY either. What would you guys advise? And if DIY, which part?

Thanks!

I should think there's a very good chance that if you bought the genuine Skoda one, it would be made by Pierburg, so save yourself the £200 difference...

If you think you can DIY it, then you probably can.

Thanks Wino.

I bought and installed the Pierburg part. Replaced the fuse. Engine light turned off by itself though the fault code was still read by OBD2 and needed a clear command.

Now something that's strange is that the throttle monitor through OBD2 shows at 100% all the time as if it never closes.

I tested it and saw it closing in my hand for a few seconds when turning off the engine. But shouldn't it open/close while driving?

I'm not sure, to be honest. If no more fault codes are generated though, it must be doing what it's designed to do, I guess?

Ask someone with the same engine and VCDS to log the position?