pentax 67ii "e20" error code...

Hey All,

My Pentax 67ii keeps giving me an e-20 error code. The camera sat for around 6 months without being used. It was fine the last time I used it. It seems to happen all the time with film loaded, but only intermittently without. This morning, I shot one frame and got the error code. I went home and messed around with the camera and was able to shoot somewhat consistently with no film in it without getting an error code.

Is this maybe a battery thing? Does anyone know what the e-20 code means and how I might fix it?

Thanks much,
Chad

I don't know but if you don't get an answer here ask on photo.net medium format forum. They have some Pentax 67 experts that hang around there.

Page 73 of the manual http://www.pentaximaging.com/files/product/67II.pdf