DEF issue

Pictures of engine
 

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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 !!
 

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.
 

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
 

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
 

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