What does it mean when the DEF light is on?
Generally, a warning light will come on when DEF needs to be added soon. If the light is ignored for too long, the vehicle will likely go into a reduced power mode. If the DEF level falls too low, the engine will not start until fluid is added.
What should I do if my Def light starts blinking?
Turn the ignition ON (key ON, engine OFF). Perform a low temperature Aftertreatment Device (ATD) check using DiagnosticLink to check for a drifted temperature sensor. Refer to section “EPA10 Perform Performance Check – Low Temperature ATD” . Are the inlet NOx sensor and outlet NOx sensor readings within 50 Parts Per Million (PPM) of each other?
Why is my Def light flashing with 3 / 4 tank?
I’m in Sylvester Ga, I turned off my truck with a full tank of DEF and come back to turn the truck back on to find my DEF light flashing. What is the problem? Its a Kenworth T-700 only got 174013 miles. If you have the PACCAR engine, it might be as simple as a software update you need.
When does the Def and check engine light come on?
SCENARIO FOUR: YOUR STOP ENGINE LIGHT IS ON WITH FLASHING DEF & CHECK ENGINE LIGHT. If the engine has been shut down or has idled for one hour after the DEF tank has been run dry, the Stop Engine Light will also be lit along with the flashing DEF Lamp and Check Engine Light. Engine power will continue to be reduced automatically.
Why is my Def indicator light not blinking?
If your DEF indicator light in on, and is staying on (aka not blinking), it is attempting to tell you that your DEF level is below the established threshold. Your solution is simple, all you have to do is refill your DEF tank. Just fill it up, the light will go off, and you’ll be on your way.
What does it mean when your Def light is blinking?
SCENARIO THREE: YOUR DEF LIGHT IS FLASHING/BLINKING, AND THE CHECK ENGINE LIGHT IS ON. A flashing DEF Light combined with a Check Engine Light indicates that the DEF level is critically low and you will derate.
SCENARIO FOUR: YOUR STOP ENGINE LIGHT IS ON WITH FLASHING DEF & CHECK ENGINE LIGHT. If the engine has been shut down or has idled for one hour after the DEF tank has been run dry, the Stop Engine Light will also be lit along with the flashing DEF Lamp and Check Engine Light. Engine power will continue to be reduced automatically.
Why is the Def light on but the tank is full?
DEF gauge and indicator light or LED flashing on the gauge default to “E” is an standard for an active SCR related fault. Not necessarily a defect with the DEF level gauge itself or that the DEF is low. Need to hook up, could be many things. pushbroom and spsauerland Thank this.
What to do if your Def light is not working?
If you have any more questions about your DEF light, if you think it’s lit up in error, or if you have any other concerns regarding your truck; give us a call at Big Shop Diesel. We’ve got the parts and expertise, combined with old fashioned customer service, to keep you up and running.