Hey, I was hoping something else was the problem and I cleaned and checked most of the electrical sockets. Also I saw that a little hose of the air filter was disconnected and the air filter was really oily and dirty. So I changed the air filter and put it back together and the error keeps showing.
This time, after literally spraying some contact cleaner in the ignition key hole, the mistake only sometimes started to show. So one minute the dashboard works, and one minute it goes wild with the ER-3 error. I've talked to an electronist friend of mine, and tomorrow I will dismantle the part and have him look at it because I'm afraid I will break it more than it is.
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