DEF tank heater bypass ????

[WVRigrat05]

2015 LML, 185k 9,100 hours, company truck just had back NOx sensor changed now I'm in limp mode again with the Tank heater, quickest I can get a 100w 2.2 ohm resistor is Tuesday and I've got two on the way. I've done a lot of reading about light bulbs instead but cant get a clear answer on what specific one or ones I need to put in place of the heater, I need the truck, it's been down 3 days and I've been hauling with my wife's half ton, and it isn't a pull truck lol, it did ok for the small stuff at work but it's not a work truck, if anyone knows what I need please let me know

 

[Mikey52]

Go to a parts house with an ohm meter and check a few.

 

[WVRigrat05]

Ok, I read one thread where a guy used two 194 marker lights in parallel, so I'm assuming wattage won't matter with a bulb, just resistance?

 

[WVRigrat05]

Bump

 

[kaylabryn]

Yes Wattage will matter. The wattage in Resistors is its ability to dissipate heat. I would assume in this case the circuit will be looking for a minimum current draw to satisfy itself (Current multiplied by Voltage equals wattage). Being you are looking at using 2 in parallel you would be looking at 50w bulbs each drawing around 4amps of current (sounds more like headlight territory).

 

[WVRigrat05]

Ok, so I cut the plug off the DEF heater and spiced in, ran wires up to the engine bay and spliced in two 55w headlights, and they come on but mechanic says he don't think it's working, guess he's having trouble getting code to clear, any ideas?

 

[WVRigrat05]

BTW this is our company shop mechanic, he's mainly a semi truck Mechanic

 

[WVRigrat05]

Nevermind, the headlights worked fine, did a def function test and forced regen and it's back to pulling a gooseneck, resistor should be in tomorrow and they're ordering a whole tank before winter.

 

[kaylabryn]

Sweet glad it worked for ya.