View Full Version : Electrical/ECU problem?

07-10-2006, 11:12 AM
While out on the lake yesterday, my display showed what looked to be an error code: "ECU." When it did this, the boat was running, and continued to run, but the gauges went dead. It did this twice. Each time, turned the key off and then back on and everything was fine again. This is on a 2005 X9 with the 350 MCX motor. Anyone know what could cause this, or what the ECU display code means? Thanks.

07-10-2006, 11:14 AM
The issue is with the dash ECU...you need to have the dealer take a look at it.

07-10-2006, 11:26 AM
Thanks MYMC.

07-10-2006, 12:05 PM
Mine did the same thing last weekend! I called the MC shop and they said it can happen when the boat starts up to quickly and the computer dosen't boot up fast enough! They said if it happens more often it could be the battery. I have the same exact boat, so I wanted to let you know what they said!

07-10-2006, 01:08 PM
Thanks jmeyers. The first time it happened while the boat was running, while we were wakesurfing. The second time happened at start-up. I'll check the battery voltage and see what it reads.