[Highwayman]

cold and windy 2 days ago sitting Idle and that comes on my Dash with 175 Miles before 65 MPH limit 6 miles later turn Truck off when I started it I got the check engine light no notice had it c90de checked when to the house then no check engine light any idea what is going on

 

[SFLTruck]

cold and windy 2 days ago sitting Idle and that comes on my Dash with 175 Miles before 65 MPH limit 6 miles later turn Truck off when I started it I got the check engine light no notice had it c90de checked when to the house then no check engine light any idea what is going on

Are you 100% sure on the code # ?

 

[Highwayman]

Are you 100% sure on the code # ?

yes P20BE (Reductant heater 2 performance) I took a pic of it

 

[SFLTruck]

yes P20BE (Reductant heater 2 performance) I took a pic of it

Sorry for the delay but I was referring to the c90de code. I can't find that thing anywhere.

 

[Highwayman]

Sorry for the delay but I was referring to the c90de code. I can't find that thing anywhere.

I was told by a Shop here it's a DEF Heater

 

[SFLTruck]

I was told by a Shop here it's a DEF Heater

Do you know if it's the in-tank heater or the line heater?

Thanks

 

[Highwayman]

believe it or not after several days of scanning and watching sensors and notice all sensors working fine there is nothing wrong with them

 

[SFLTruck]

believe it or not after several days of scanning and watching sensors and notice all sensors working fine there is nothing wrong with them

Man I hate intermittent issues they are a ***** to find.

 

[Highwayman]

Man I hate intermittent issues they are a * to find.

it cleared up then returned on another cold day with a second code P2047 Reductant Injector Control Circuit

 

[SFLTruck]

it cleared up then returned on another cold day with a second code P2047 Reductant Injector Control Circuit

So it seems when a cold temp threshold is reached and the DEF heater/s are supposed to come into play that's when you get the error. It's has be the DEF controller or one of the two heater/s ,or, a poor connection to one of them.