Code 512, here is what fixed mine
Thread Starter
|
Cross-Country
Joined: May 2002
Posts: 60
Likes: 1
From: in a house
Code 512, here is what fixed mine
I got this code in my 92 5.8L Bronco. I tried numerous things to fix, the following is a list.
EEC Relays...Fixed for about a week.
O2 Sensor...No Change.
Trans Check out at shop...No Change.
Ignition Switch...No Change.
Went to electrical shop for a week...No Change.
Replaced Negative Battery Cable with OEM Ford...FIXED AT LASt.
Al...
EEC Relays...Fixed for about a week.
O2 Sensor...No Change.
Trans Check out at shop...No Change.
Ignition Switch...No Change.
Went to electrical shop for a week...No Change.
Replaced Negative Battery Cable with OEM Ford...FIXED AT LASt.
Al...
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Frequently, a poor electrical connection will cause intermittant computer codes and other problems. The biggest problem I have seen is when the cables get corroded inside without really showing on the outside, causing excessive resistance.
Thread Starter
|
Cross-Country
Joined: May 2002
Posts: 60
Likes: 1
From: in a house
Code 512 is Keep Alive Voltage Missing. What this did was make the truck run like I was starting out in 4th gear, had no power, check engine light ON, I could manually pull it down to low and it would hit 2nd gear, not good on the tranny though. The worst part is that it was intermittant, sometimes 2 days between episodes, sometimes every time I started it. Just thought I would post something for the next guy that might search that code number, I know I am not the first person to have this happen.
Al...
Al...
New User
Joined: Aug 2021
Posts: 1
Likes: 0
Code 512 keep alive memory test failure
I have been dealing with the same issue for awhile now. Replaced alot of sensors and even replaced battery with new positive cable. Negative cable looked decent so I left it. I'm going to replace it and see what happens. Thanks for the info
Thread
Thread Starter
Forum
Replies
Last Post
