You really should test these caps in resistance mode, it's much easier to interpret the results. Some meters use different open-voltages in diode mode so the reading you get is not an absolute value. Sure, if you see 0.000V, then you know what that you have a short. But otherwise, diode mode is good for testing diodes or comparing to known-good board.
I just tested a known-good board and I measure 0.355. More importantly, in resistance mode it is in the 10's of KOhms so that means there is no short, which is what you need to determine.