I got a battery and engine light yesterday. Got her home and it had a P0154 (rear O2 sensor) replaced the sensor. Now today I got the lights again pulled right back in the garage and checked it. Now I have a P0562 (Battery low Voltage) and a b1122 (right turn output fault/open. Can b1122 be the cause of the P0562? Any help will be greatly appreciated.

 

1. Year and model of the bike would be useful.

2. Maybe the other way around, P0562 is the cause of the B1122. CAN Bus systems circuitry can cause strange issues as they all seem to be interconnected.

3. How old it the battery?

4. Try charging the battery, clearing the codes, and see if they return.

NOTE:
The above information, while credible, is worth what you paid for it and should not be considered gospel.
Do due diligence, research and have a H-D Field Service Manual before working on your bike.
You will probably have many opinions and suggestions presented; make sure you research the person providing the helpful information as there are some who provide good information that is useful and some who speak out of other orifices with gibberish. You will figure out this quickly.

 

Sorry about that 2008 Softail Deluxe. I got her about 5 yrs ago and it came with 2 batteries.i always have one charged up. The one in it has been there maybe 3.5 yrs. I was in an accident Oct of 2022 and the jackhole shop had her for a year and 4 months. Gonna try the other battery see what happens. Thank you.

 

3.5 years can be getting to end of battery life in hot Texas environment.
May need a new battery, heat sucks the life out of them sometimes.
Put a Volt Ohm Meter on the battery when the bike is running and see what voltage it is charging at, should be 13.5 - 14.9 or there about.

Let us know what you find out, always good to know so others have reference should they encounter the same.

 

I will check it in the morning and let you know. Hope it's just a battery.

 

Start with a new battery and then only after a night on the maintenance charger.

Kill all the codes and try again.

 

I put a multimeter on it while running with a fully charged battery. It was reading between 11.8 and 11.9. Didn't go above that.

 

Could be charging sysem or a really bad battery....

Turn off the bike... measure the static voltage of the battery...

This is the poor man's (doesn't have a battery load tester) battery load test....

As you (or someone) is holding the multimeter on the battery terminals, and monitoring the multimeter... Start the bike

It will show the static charge, and when you turn the ignition switch to on, it will drop a couple tenths of a volt..

Then.... when the starter is first engaged, a good battery will drop initially, then come back up...

If that initial drop is below 10v, the battery is weak, and probably bad. If it drops to 9.5 volts (or lower) initially... The battery is toast... get a new one...

 

You always give good information, the part I like the best is your disclaimer.

 

Especially his part about;

"You will probably have many opinions and suggestions presented; make sure you research the person providing the helpful information as there are some who provide good information that is useful and some who speak out of other orifices with gibberish. You will figure out this quickly."


Spend a little time reading any forum, and you will usually be able to figure this out, as he said, "quickly".