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P26AB Code


New Member
Sep 4, 2023
Truck Year
Hello, my 2018 Ram eco has been popping this code P26AB for several months now. I have the Blue Driver OBD2 scanner and the code comes back so thought I better do something. Performace has not changed but cel continues to come back. Just cking to see if the engine coolant bypass valve is the place to start?


New Member
Sep 9, 2023
Truck Year
More than likely it is the valve. You could check the wire to ensure it has power and ground. Have you already change the valve?