E51 Xbox 360 error code | Tinker Mods
Error code discussion
Well, you're in trouble now. This Xbox 360 error code is a dead end. For starters, this code can only be triggered when your Xbox 360 console is in manufacturing (MFG) mode. This mode is not available or tested by the general public. This means there is absolutely no information available about this code and what to do about it. To make matters worse, pulling an E51 error code on an Xbox 360 means your console is stuck in MFG mode. So you have to figure out how and why this has happened, even if you can fix the E51 error itself.
