Chevy and GMC Duramax Diesel Forum - Reply to Topic
EFI Live Place for your EFI questions

Thread: Error Code $0281 Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Chevy and GMC Duramax Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
11-02-2019 11:48 PM
D_R_C Even with getting a new AutoCal there’s a good chance you’ll need to first update it.
EFI makes changes once in a while, when the tune was done they probably had a update in the works.

Your batteries need to be above 12 volts when loading tunes with any tuning device.
After having loading issues in the past I now always hook up a battery charger, setting it on float charge or even 6 amp or what ever your charger has for a little lower charge.

You’ll find the tunes load faster when the voltage is around 12.3-12.5.
As soon as you turn the key on the volts can drop in the 10-11 volt range, grid heater and glow plug circuit will take them down.
Even the dealer will hook up a battery charger when they’re checking for updates

I picked up cig lighter/power plug digital volt meter, so I can monitor the voltage while loading tunes.
This one I wired directly to the driver side battery, but your factory power socket will do the same.
10-29-2019 06:33 AM
Jimc295 Motorops has a post about this problem. How to work around $0281 EFI Live Error Code.
10-29-2019 06:15 AM
mray Possibly, also most recommend that a low amp battery charge be applied to the batteries while programming.
10-28-2019 09:00 PM
JSeely Also i seen alot of people get it due to outdated firmware but i just got the autocal in the mail. Would they send me it outdated?
10-28-2019 08:55 PM
JSeely
Error Code $0281

Im trying to tune my truck following all the steps (unplugging radio fuse, ignition on and truck is not running) when i goto flash the truck pops up with service 4wd so it takes a couple min goes away so proceed and then i get a $0281 code. Anyone know what im doing wrong? TIA
2005 LLY

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome