dtc code question
Thread Starter
Safety Car
Joined: Jul 2019
Posts: 3,856
Likes: 1,306
From: nashville TN
dtc code question
I have a hard code (unable to clear it) of U0100. can communication code. from what I read it saying the can bus cannot communicate with the ecu. car runs perfectly fine but this stored code bothers me. any ideas on how to fix it? battery disconnect doesn't work code reader delete doesn't work and no idea where to start to look since the car runs perfect.
Burning Brakes
Joined: Nov 2016
Posts: 1,192
Likes: 438
From: San Dimas CA
Not true. If you have a professional scan tool, you could find the module which is actually generating this message. But if everything is functioning normally, I recommend you just ignore it as it is probably a history code from some transient condition which will clear after 50 ignition cycles.
Le Mans Master
Joined: Oct 2014
Posts: 8,680
Likes: 2,729
From: Atlanta GA
Even GDS2 does not clear my history codes , But as Laserdude states it will show the module that generated the code
I have had some show a module did not boot on startup but after a restart all was fine .... If it is in history I would not worry about it
Dave
I have had some show a module did not boot on startup but after a restart all was fine .... If it is in history I would not worry about it
Dave
Tech Contributor
Joined: Oct 1999
Posts: 41,066
Likes: 9,833
From: Charlotte, NC (formerly Endicott, NY)
Unless there is something wrong with the car communication codes don't mean much. There could have been an electrical noise that interrupted a state of health message between two modules and when the signal was retransmitted the interference had disappeared.
Bill
Bill
Thread Starter
Safety Car
Joined: Jul 2019
Posts: 3,856
Likes: 1,306
From: nashville TN
appreciate everyone input for now ill leave it be and enjoy the new ported blower sounds!
