Finally spoken to VW – and to a technician rather than the front of house staff, but am still no further to understanding the problem...
I’m told they have checked all wiring, which is fine, but without ripping the looms apart they canot to totally sure.
The error code still points towards throttle body so I have two main options...
To replace throttle body at cost of £535
To replace ECU unit at cost of £968 – this part would be a 10 day wait to come into them, and they cannot guarantee this will fix it, and will have to charge me even if it doesn’t work (I presume the same stands for the throttle body)
I am reluctant to go for the throttle body option as AKS have already been through this with no success.
Other option is I send away my ECU to ‘BBA Re-man’ or ‘The ECU Doctor’ for fixing/replacement etc – cost for this is significantly cheaper than the above, but am told would I need to pay an hours labour to have it refitted on return.
Does anyone have experience of this procedure?
I asked VW for the part number for the ECU (so I can get an accurate fix/replace quote, as requested by these companies themselves) - lady got quite annoyed with me for asking, asked why I needed it, and when told why said ‘oh, hat’s ok, I thought you were going to put it into the internet and try to find the part – you can’t do that!’
Any advice on by next step?!
I’m leaning towards sending away the ECU
...but think this will mean no courtesy car from VW in the mean time.