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Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: Familyman1 on February 17, 2021, 10:40:51 PM

Title: Fault Code 27 12V low voltage
Post by: Familyman1 on February 17, 2021, 10:40:51 PM

Hello

hoping to get some advice. I have a 202 SR/S and went to check the bike today. we have no electricity the last few days and it was 30ish F in the garage. When I started the bike, I received  a  Fault code 27.

Is there anything I need to do or watch out for?,  I'm not sure how to charge the circuit if it won't start.  My SOC has remained steady at 62%. Using firmware 19

Appreciate the help. I am a novice and still learning

Thank you

Title: Re: Fault Code 27 12V low voltage
Post by: Crissa on February 18, 2021, 05:04:01 AM

Googling that, I get '12v battery low'.  Your tiny accessory battery may not have liked the cold, or it got stuck in a transmit mode and drained it.
https://zeromanual.com/wiki/Gen3/Error_Codes

You probably just need to warm the accessory battery back up, if its heater turned off, it will produce low voltage until it wakes up.
https://zeromanual.com/wiki/FST_Platform/12V_Battery

I don't see how to get to it, but the manual says you can get to the tabs.

-Crissa

Title: Re: Fault Code 27 12V low voltage
Post by: SkyYeti on February 21, 2021, 11:32:21 PM

I get that error pretty much every day on my SR/F.
I use the bike about 4 times a week on a 60mile (96km) round trip so the 12v battery is definitely getting the chance to charge up - whether it is charging properly I can't say.
It's probably something that I should take the bike into the dealers for, but since I've had the warning for last 3 months and the bike's still running, I'm gonna risk it ;)

Title: Re: Fault Code 27 12V low voltage
Post by: Familyman1 on February 28, 2021, 11:10:10 PM

That you both for the help. I've had the bike out a few times and the error hasn't returned. Maybe it was related  to how cold the garage was?  35ish ??

Title: Re: Fault Code 27 12V low voltage
Post by: Hans2183 on March 01, 2021, 04:36:34 PM

Just a quick note on warming the 12V battery up. The bike has that feature built in and I have seen that working a few times on my own when I was riding and stopping (which I try not to when cold) in below 0C temperatures. Then when powering the bike back on I get a warning on the bottom of the dash and the bike won't go live. It takes around a minute and then it goes away and you can use the bike. The error clearly states that it's heating up the battery. I you want I can look up some footage.