Almost 200,000 miles now this? Code U012D

[THE COOP]

It's been a while since I visited as life has taken over, 2017 ST, 198,000 miles, my daily driver for 6 years and I drive 50 miles each way to work 6 days a week. Whoosh stage 2 tune for 5 years and no problems, replaced the alternator about 2 years ago and yesterday I got this code U012D, battery light on and Accessport says it's an lost communication with generator control module? It Idles fine but as soon as I move the entire dash go's dead, no head light's, no electric assist steering. and no gas pedal? HELP!!!!! Has anyone had this issue and solved it? COOP

 

[Dialcaliper]

When was the last time you had your battery tested, checked voltage or replaced?

 

[THE COOP]

I put a new battery in it Sunday afternoon, idles just fine and charging between 13.5volts - 14 volts depending on the voltage needs but as soon as I drive the car even it the driveway I loose all dash and radio, lights and everything electrical?

 

[TyphoonFiST]

I put a new battery in it Sunday afternoon, idles just fine and charging between 13.5volts - 14 volts depending on the voltage needs but as soon as I drive the car even it the driveway I loose all dash and radio, lights and everything electrical?

Did you do a battery reset procedure after replacement?

 

[alex7]

Did you do a battery reset procedure after replacement?

Is that this -

---> Turn the ignition on, but don't start the engine

---> Turn the headlights on

---> Pull the high beam stalk five times in a row (not by blipping it - you must fully engage it making sure the blue high beam indicator is turning on and off)

---> Depress the brake pedal three times in a row

---> Finally, watch the battery indicator blink three times indicating that the BMS successfully has been reset.

 

[fiestar]

200,000 miles is impressive for a fiesta st! you've taken good care of it.

 

[THE COOP]

Is that this -

---> Turn the ignition on, but don't start the engine

---> Turn the headlights on

---> Pull the high beam stalk five times in a row (not by blipping it - you must fully engage it making sure the blue high beam indicator is turning on and off)

---> Depress the brake pedal three times in a row

---> Finally, watch the battery indicator blink three times indicating that the BMS successfully has been reset.

I did reset all codes with my Accessport but I'll try this and see if it helps, thanks. COOP

 

[Mega ST]

Possible loose connection? Poor ground?