Do not ignore the code. While the car may run fine initially, P20DF000 will eventually trigger a (common on Volvo D4, D5, D6 engines) after a predetermined number of engine starts. Fix it proactively to avoid being stranded.
The manual says: “HOT- — thermal threshold exceeded. Reduced performance mode.” P2df000 Volvo HOT-
: This usually appears on the dashboard to warn you that the component is overheating or failing, which can disable your cabin heating or electric-only driving mode. 🛠️ Common Symptoms Do not ignore the code