The Diesel Garage banner

3406E Code 12

12K views 3 replies 3 participants last post by  fest777 
#1 ·
Could someone please look up what CODE 12 is for a 3406E? Thank you!
 
#3 · (Edited)
Thank you Mr Haney.

Actually the coolant level sensor in the truck is the same as the one that was in the truck that the "E" model came out of.

So basically the sensor has crapped out. What is the ECM doing about this? Is it derating the engine? Or does it simply kick the code and continue to run normally? Can the setting be set to "NO" with a handheld OTC scanner?
 
#4 · (Edited)
it may derate or shut down depending on the setting in the ecm, had the same prob. a while back, you can shut it off like mr. haney said , may need cat et or ecap, dealer told me otc may work he was not sure ,put in a new sensor and see if the code will go away or try a good one !good luck anthony
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top