The p26ab. Chg the bypass value. The cide will go away sometime but will rtn as well. I had to chg mine. Cannot help with your other codes. Not familiar with them.
There is a bypass heater control on the right side of the truck under the air filter box. It controls cab and trany temps.
There are 3 hoses that go into this control unit. It has a flap inside that opens and close like a stat when temps require it to open and direct coolant to proper...
Im not having those issues. My truck is still running. I have put another 10k on truck. No shutdown. I do clear error code but that doesnt seem to matter.
I have had this issue since Christmas with error code P20DB. Related to DEF system. Happened when it was -30C. Anyone have any solutions or ideas as to how I can fix this or make it go away other then clear code whenever I go out. No one in my area wants to touch my truck or have any...