P1698 error after flat battery
So, I've had a few flat batteries over the last few weeks. Sometimes happens after two days, sometimes takes two weeks. Today was the final straw though.
After managing to get it charged enough to start and take it out for a ride. Engine management light stayed on all the way out (10 miles or so), with the ABS and traction control lights flicking on and off for the first few miles. Did what I needed to do and the engine management light stayed on all the way back.
I've plugged it in to the Dealertool and its giving me error
P1698 - Sensor 5v supply, circuit malfunction.
I've reset it now and it appears to have gone off, but anyone know what it is and whether I need to worry about it?