9K rev-counter error Code

[PieEater]

Weird that a duff battery would trigger the 9K fault code but useful to know it can happen. Something I believe to be true unless otherwise corrected is that one or more cells can fail on a battery but as the the remaining cell(s) are still able to output 12v most chargers don't detect a problem. If this happens as well as meaning lots of clicks and buzzing but no start, the lack of available amps could I guess mean the ECU doesn't have the ability to operate properly and so throws up random stuff, but that's an electrical ignoramus hypothesising so is probably rubbish. Anyhow glad you're up and running  mokin