What does DEF temperature light mean?
High Exhaust System Temperature (HEST) Lamp Indicates that high exhaust temperatures may exist due to aftertreatment regeneration. Aftertreatment DPF Lamp Indicates that the aftertreatment Diesel Particulate Filter (DPF) requires regeneration.
What happens if I run my truck out of DEF?
If the truck is allowed to run out of DEF the engine’s power is reduced, a solid red warning will be displayed and the vehicle speed will be limited to 5 mph until the DEF tank is refilled.
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.
What’s the stop engine and check engine light?
Truck is a 2015 cascadia with dd15 with 205k miles. Click to expand… My check engine and stop engine light is coming on while driving. Flashes a few times then stays on for about 30 seconds but the engine doesn’t die. It’s happened to me 3 times in the last 70 miles.
What does a red stop Engine Lamp mean?
Will flash for 30 seconds at key ON if maintenance is due. Malfunction Indicator Lamp (MIL) Lights up to warn the driver to schedule service soon. May light up in addition to other lamps. Red Stop Engine Lamp Indicates that engine must be stopped as soon as it is safe to do so. Flashing Red Stop Engine Lamp
What happens if you ignore the Def light?
Normal engine power will be restored after refilling the DEF tank. Essentially, you ignored the DEF light when it was blinking, and now you have to refill the tank before you can do much else. SCENARIO FOUR: YOUR STOP ENGINE LIGHT IS ON WITH FLASHING DEF & CHECK ENGINE LIGHT.