I'll try to keep this short....   Had the coil warning light flashing on my Yeti 2.0 tdi, took it to a dealer that read the engine code (P2102) they cleaned and modified the Throttle body (receipt attached in photo - £210!!).   About 2 weeks later engine light came on with codes - P0121 and P2102.   Decided to buy a new throttle valve and fit myself (£124). I had read that a lot of the faults where in the motor mechanism, gears etc and they can become contaminated w