Low Voltage & Very Low Voltage Fault Codes: P0562 & P1501

[crazychucky8]

Hey guys, I have a 2001 RXDI with 128 hours that I have been working on - Wear Ring replacement, drive line repair kit (cavitation issues) and a Bendix replacement. After finally replacing the Impeller Shaft and Impeller due to a cross thread issue and putting everything back together I am now getting 2 error codes: P0562 (Battery Low Voltage) & P1502 (Battery Voltage Very Low). The ski starts up with no problems. About a minute into the ski running idle the maintenance alarm sounds. Could thisbe as simple as the battery needing re-charged again or has the rectifier gone bad? The rectifier is about 2 years old and honestly has about 3 hours on it.

The battery voltage upon startup is 13.4 volts. While running it would range from 9v's to 12v's.

On top of the low voltage issue, the ski won't rev beyond 4800 rpm's - out of water. Any thoughts on this issue?

Thanks for your help!

 

[crazychucky8]

So, I figured out what the problem was with the low voltage issue. The rectifier power wire fell out of the power supply connector attached to the MPEM. Plugged it back in and all is well.
Still not revving above 4800 RPM though. I did a compression test. Not great, both cylinders are registering 100PSI. Not sure that would stop the engine from revving above 4800 RPM though.