P0562 Battery Voltage Too Low

[muskokamarc]

Hey guys - Last year when i bought my machine (2007 Wake edition Supercharged 215), the P0562 code was showing up. Dealer took it in and said they just replaced the bad battery with a new one, the code went away.

I fired it up this year after a long winter and the code is showing up again.

Note: I charged the battery multiple times over the winter with a Noco Genius battery charger.

Any ideas as to what it could be? Is it possibly the voltage regulator?

 

[mikidymac]

What's the voltage on the battery when sitting, when running and when you rev the engine up?

If it drops below 12V you are going to get the message.

 

[muskokamarc]

What's the voltage on the battery when sitting, when running and when you rev the engine up?

If it drops below 12V you are going to get the message.

I haven't measured it but I just bought a multimeter and will test to see.

It only appears when I start the machine up and then disappears if that matters, or is that what happens with all codes?

 

[Sportster-2001-951C-Stock]

If the low voltage message is only brief, it's just indicating battery voltage has dipped below the normal threshold momentarily. When you crank over the engine to start, the electric starter will drag the battery voltage down until the engine starts and begins to replenish while running, by the charging system.

This will especially happen if you attempt restarting numerous times and shut it off right away before the battery can be replenished. Think of it as a battery health diagnostic, as the battery ages or is deeply discharged by running an accessory such as a stereo system, you'll find the alarm becomes more prevalent.

That said and FWIW, you should never charge the battery without 1st disconnecting one of the terminals or turning off the battery switch if it has one. The reason is b/c there's a risk of damaging the computer electronics or maybe the charging system, the latter is less likely.

Some of these batteries are quite small for what we ask of them, they are put to the task and thus the lifetime might not be what you anticipate. Repeated restarts will cause battery voltage to be low and can damage the battery, so avoid making a habit of doing this unnecessarily.

 

[muskokamarc]

If the low voltage message is only brief, it's just indicating battery voltage has dipped below the normal threshold momentarily. When you crank over the engine to start, the electric starter will drag the battery voltage down until the engine starts and begins to replenish while running, by the charging system.

This will especially happen if you attempt restarting numerous times and shut it off right away before the battery can be replenished. Think of it as a battery health diagnostic, as the battery ages or is deeply discharged by running an accessory such as a stereo system, you'll find the alarm becomes more prevalent.

That said and FWIW, you should never charge the battery without 1st disconnecting one of the terminals or turning off the battery switch if it has one. The reason is b/c there's a risk of damaging the computer electronics or maybe the charging system, the latter is less likely.

Some of these batteries are quite small for what we ask of them, they are put to the task and thus the lifetime might not be what you anticipate. Repeated restarts will cause battery voltage to be low and can damage the battery, so avoid making a habit of doing this unnecessarily.

Thanks for all the info.

If i put the key in and start the machine, it will show the code briefly.
If i turn the machine off, leave the key in, and restart, the code will not show up.
But if i take the key out, put it back, and then start machine again, code will show up briefly.

Not sure this helps diagnose anything, but that's what I notice!

 

[Sportster-2001-951C-Stock]

It doesn't seem like there's a problem. If the code were to appear constantly while the engine is running, it would be cause for concern.

Regardless, if you measure your battery voltage after the ski has been sitting rested for several hours, it should be above 12.52 volts. If less than 12.5 volts following a rest period, the battery is either damaged or not fully charged.

Here's an article that does a great job of explaining what to expect, and how to judge the condition of your battery:
Charging Information For Lead Acid Batteries – Battery University