DEF issue

[My3Girls]

The blue arrow i cleaned with the mass air flow sensor cleaner, the white arrow I replaced sensor

 

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[My3Girls]

Pictures of engine

 

[My3Girls]

Blue arrows I cleaned , white arrow I replaced

 

[LegalBrief]

Have u checked the def level vs the gauge? U maybe out.. the DEF gauge is far from accurate…

 

[My3Girls]

I did not physically check it, but I just put 2 jugs in.

 

[gemarsh]

I did not physically check it, but I just put 2 jugs in.

It was pretty low!

 

[My3Girls]

Yes, really low !! the bars on the gauge were saying 1/2 full so I put another jug in, cleaned, replaced sensors and hope that does it !!

 

[R467X]

Yes, really low !! the bars on the gauge were saying 1/2 full so I put another jug in, cleaned, replaced sensors and hope that does it !!

Def is also highly corrosive and crystalizes quite easily. I bet if you pulled your def cap out you'd see some white crystalizing inside. If you ran it low like that for a while with old def fluid it's very possible that something does need to be dissolved / cleaned. You might want to consider dumping a def cleaner in there (follow instructions on whatever you buy).

I also don't recommend cleaning the MAP sensor. Only replacement. Once a year. Or buy a spacer from any of the big brands to help it from gunking up like that. and my bad it's only 1 for the 17-19 L5P.

 

[My3Girls]

I did add a def cleaner to the tank for that reason, I cleaned the sensor while I wait for the new one to come in, should be any day now !! I replaced the air filter also

 

[R467X]

I did add a def cleaner to the tank for that reason, I cleaned the sensor while I wait for the new one to come in, should be any day now !! I replaced the air filter also

Make sure you also force a region either stationary or a 30 mile round trip

 

[My3Girls]

I've been looking at how to one, but can't figure out in the settings or anything, doesnt say how to ? Thanks !!

 

[R467X]

I've been looking at how to one, but can't figure out in the settings or anything, doesnt say how to ? Thanks !!

You have to buy a specialty scanner with the capability or banks idash / edge cts

 

[My3Girls]

You have to buy a specialty scanner with the capability or banks idash / edge cts

 

[gwagers81]

So you recommend just replacing the sensors vs cleaning them. Had seen a lot of talk about cleaning them. I purchased one from the dealer, I haven’t swapped it out yet but on my todo list. Anyone have the part number I think that would be helpful so we all know which one to buy. Also with swapping out the sensors, and not cleaning them do we still need to disconnect the battery?

 

[R467X]

So you recommend just replacing the sensors vs cleaning them. Had seen a lot of talk about cleaning them. I purchased one from the dealer, I haven’t swapped it out yet but on my todo list. Anyone have the part number I think that would be helpful so we all know which one to buy. Also with swapping out the sensors, and not cleaning them do we still need to disconnect the battery?

Yes disconnect the battery anytime you are doing any work on that truck. I don't like to clean sensors. They are cheap enough that I just replace them once a year. As far as part #, pull the old one off and you'll see the part # on it.