CAN-H and Vbatt Short

Hi Techies,

I am facing one issue in my CAN-physical layer design.

I am using Fujitsu micro. I have a CAN messages only for Tx from my micro. 
No Rx messages for my system.

When i am shorting CAN-H line and Battery voltage(11V to 14 V) line, my 
controller generates the "Error passive" error.

Why this is happening.? And my design validation team doesn't agree this 
point.

And then Error Passive doen't recover back to Error Active State even if i 
removed the Short.

Pls help me out Is there any protection circuit vailable to avoid "Error 
passive " State. Or If it happens in protocol suggest me some documents 
for reference..

Regards,

BoopathiRaja.G