P500 Help dead in the water 500

[Mbradley42]

Started fine, drove it probably 5 miles today, parked it, went to start it again nothing but clicks. finally got the screen to turn on and the check engine light flashes 6 times slowly and 4 times fast so I guess the code is 64 anybody know what you that code is? It seems like a dead battery but it cranked fine all day so I'm not sure any ideas? I'd just rather figure out what's wrong before I go spending money I don't need to @HondaTech @Hondasxs

 

[dls1966]

Could be a loose connection with the battery or a bad ground check both

 

[906UP]

Grab a volt meter if you have one and check battery voltage, should be 12v plus

 

[Mbradley42]

It's 12v when ignition is off drops way down when ignition is on or try to start. I checked the connections on the battery they are good and snug. Also the code is 64 not 65. I have it on the charger and it finally shifted to neutral. I'm leaning towards bad battery. I also pulled all the fuses and they looked new.

 

[906UP]

It's 12v when ignition is off drops way down when ignition is on or try to start. I checked the connections on the battery they are good and snug. Also the code is 64 not 65. I have it on the charger and it finally shifted to neutral. I'm leaning towards bad battery. I also pulled all the fuses and they looked new.

What does the bat voltage drop to with key on and with key on while trying to start/crank?

It really shouldn't drop below 10-10.5v while cranking, if it does it's bad. It's not uncommon for a battery to just fail out of the blue. How old is it?

 

[Mbradley42]

It drops to the 4 and 5 volts and it's a stock battery maybe a year and a half old

 

[Bomersteve35]

Ok so our voltage regulator was unplugged from the dealership. You need to check the battery when its running for a charging volt you are looking for 14volts. YouTube how to test the stator for continuity. To me power problems start at where it makes power the motor and follow it till you find it. Could be a battery or something loose even a bad ground

 

[Mbradley42]

As of now it won't run when I finally get it started I'll do just that @Bomersteve35

 

[PJ1]

As of now it won't run when I finally get it started I'll do just that @Bomersteve35

Bad starter motor can make it appear like the battery is bad. My volt meter would drop to 5 volts when cranking with the bad starter. Good luck!

 

[Mudder]

My bet is on the battery. Just experienced that my P500 would crank but not start on low voltage. Put it on charger and then fired up. PGM- FI system has a fail function and stops the engine if outside of parameters - like a voltage drop.
DTC Code 64-1. Self management relay low voltage (less than 6.5 V) · Engine does not start.

 

[Mbradley42]

Bad battery was the culprit

 

[Todd627]

Bad battery was the culprit

Glad it wasn’t anything serious 👍🏼

 

[Mbradley42]

Glad it wasn’t anything serious 👍🏼

Me and you both man

 

[906UP]

Bad battery was the culprit

Cool, easy fix! Thanks for the update