2001 Prius ERROR CODES: P3191, P3101, C1259, C1521, C1522

Hi all, I have another problem with my 2001 Prius. A new traction battery was fitted in June 2010 (see previous post), it was serviced again in November 2010 and all seemed well until 2 days ago.

ERROR CODES: P3191, P3101, C1259, C1521, C1522.

I had just backed out of driveway, car was idling while I closed gate and there was a clunk before the engine went into quiet mode. Drove about 1km when noticed the triangle with exclamation mark light was on. Had it towed to dealers. Initial response from dealers is that they have cleared error codes and taken for test drive, can find nothing other than possible moisture in spark plugs. (Still limited expertise with Prius in this neck of the woods.)

Would appreciate any feedback from you guys. Have noticed some threads re: battery reseal and electrolyte leaks. Is this relevant to my situation?

Any help would be much appreciated.