What does Audi fault code P00B700 mean?

[RileyFitz]

Fault code P00B700 indicates insufficient engine cooling, meaning there is inadequate coolant flow. Solution: If you find that your car's engine coolant is insufficient, you can top it up yourself. You need to purchase coolant of the same brand and model as the original. If using a different brand, you must first drain the original coolant completely before adding the new one. Precautions: 1. Do not mix: Different brands and models of coolant may have different formulations. Mixing them could cause chemical reactions that affect the antifreeze's performance. 2. Do not use water as a substitute: Never use water directly instead of coolant. Water boils easily, producing large amounts of steam, which severely impacts cooling efficiency.