2009 Grizzly 550 EPS FI ER-1 CODE - Yamaha Grizzly ATV Forum
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post #1 of 14 Old 02-06-2010, 08:24 PM Thread Starter
 
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2009 Grizzly 550 EPS FI ER-1 CODE

My new 2009 EPS 550 stalled and then would turn over but would not stay running. The display read ER-1 I dis-connected the battery and re-connected then it started right up with no error code. Everything seams fine, does anyone know what the ER-1 code means?
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post #2 of 14 Old 02-06-2010, 08:37 PM
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Er-1, ECU internal malfuntion (output signal error). No signal recieved from ECU. Sounds like you did the right thing to correct the problem. Make sure battery is fully charged, connections are tight, and you keep it on a "Battery Tender" when stored. If it keeps happening I would have the dealer check it out. Good Luck.
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post #3 of 14 Old 02-06-2010, 08:45 PM Thread Starter
 
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Thanks for the reply, The ATV is only 1-month old and the battery bolt on the positive does seam to be stripped. The aluminum nut doesn't grab the bolt anymore. Can I use stainless steel?
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post #4 of 14 Old 02-06-2010, 11:00 PM
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That is a special type of contained nut. I would swing by a battery shop and pick up one. They'll probably just give you one. You would have problems keeping a standard type nut from turning while you tighten the screw.
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post #5 of 14 Old 06-01-2010, 10:17 AM
 
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I am having the same code read out. but mine will not start without haveing to be jumped and then it will only run for 15 mins or so and it will die. and then you need to jump it again. what does the code mean and how do i fix it?
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post #6 of 14 Old 06-01-2010, 10:26 AM
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How old is your battery. Mine had the same problem on Sunday. Mine was also throwing code 46....means low power output. Got a Deka battery coming this week to solve the problem.

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post #7 of 14 Old 06-02-2010, 02:06 PM
 
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it is the factory battery from when i got the machine in october.
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post #8 of 14 Old 04-17-2015, 07:54 PM
 
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I'm having the same Error 1 code. I went to hop on the Grizz this evening and the key had been left on for a few days. Apparently I left it on, it is dead, really dead. I tried to put a 1.5 amp trickle charger on it, but after a few minutes it goes to trouble mode. So I went and bought a jump box and jumped it. The Grizzly started and I rode it for a few minutes, but won't start back without a jump.

Er 1 flashes briefly on the left of the screen. I think my battery is toast. It has 13 hrs on it too.

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post #9 of 14 Old 04-17-2015, 08:41 PM
 
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Quote:
Originally Posted by KYBoy View Post
I'm having the same Error 1 code. I went to hop on the Grizz this evening and the key had been left on for a few days. Apparently I left it on, it is dead, really dead. I tried to put a 1.5 amp trickle charger on it, but after a few minutes it goes to trouble mode. So I went and bought a jump box and jumped it. The Grizzly started and I rode it for a few minutes, but won't start back without a jump.

Er 1 flashes briefly on the left of the screen. I think my battery is toast. It has 13 hrs on it too.
If you want any chance of saving the battery at all you need a battery charger. Jumping it to get the atv running, then using the atv stator is not going to work on a battery that low. You may also burn out your stator doing that as that's too big of a load on it (That's why your trickle charger would not charge it).
If a battery charger can not bring it back to life, then it's toast. Bite the bullet and buy a new battery.

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post #10 of 14 Old 04-17-2015, 08:50 PM
 
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Thanks for the reply dezz, I think I've let it go too low and it's done. The key has been left on for a good 3 days. Winch on it too.

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post #11 of 14 Old 04-18-2015, 01:05 PM
 
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Update from my last post. I went and got a new battery, Grizz works just fine. No more Er1 code.

I'll be taking the key out when I get done with it from now on. $100 mistake that I don't want to happen again.

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post #12 of 14 Old 04-18-2015, 01:33 PM
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Better than old pods that would just fry the display.
 
post #13 of 14 Old 04-18-2015, 02:39 PM
 
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Quote:
Originally Posted by KYBoy View Post
Update from my last post. I went and got a new battery, Grizz works just fine. No more Er1 code.

I'll be taking the key out when I get done with it from now on. $100 mistake that I don't want to happen again.
Glad you got it figured out and working. Also, thanks for posting back the fix.

2003 Grizzly 660
30" s/w Maxxis Zilla's on Vision wheels (summer tires)
27" s/w Titan 589 on stock wheels (winter tires)
2.0 mm Primary Shim
Dalton Metallic Red Secondary Spring
High Strength Axles
Warn 2500 lbs winch
Grizzly 700 cam plate (no performance improvement, just better non-wearing slide design)
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post #14 of 14 Old 04-18-2015, 06:40 PM
 
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A quality charger/tender and load tester keeps headaches and guesswork at bay.

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