DEF heater code popped up
07-08-2018, 09:18 PM
Join Date: Jul 2018
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DEF heater code popped up
I have a 2015 350 6.7L and today the DEF heater code came on.Will this code slow the truck down? I am driving 19 hours soon and need my truck.Help!
07-08-2018, 10:13 PM
Join Date: Mar 2012
Location: Oregon
Posts: 3,490
The truck will eventually go into speed reduced operation which will lead to forced idle mode if driven long enough. Go see the dealer before your trip and have it repaired.
07-08-2018, 10:44 PM
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Thx for the help!I don't think the dealer can get it fixed before i leave.
07-08-2018, 10:49 PM
Join Date: Mar 2012
Location: Oregon
Posts: 3,490
I wouldn't leave with it like that...
07-08-2018, 10:51 PM
Join Date: Mar 2010
Location: Woodbridge, Ontario, CA
Posts: 5,488
What is the exact DTC description?
07-09-2018, 04:30 AM
Join Date: Nov 2001
Location: Tallassee, ALabama
Posts: 6,748
I do not think the DEF heater will cause the truck to go into limp mode. If the DEF can still be "dosed" into the exhaust, there should be no problem. This DEF heater seems to be a common problem lately. Ford has extended the warranty on the DEF heater. Contact a dealer to see if you are still covered and for repair.
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