P16C6Heater support pump: running dry

• Volkswagen group code · Engine

How the car detects it

The electric pump that helps circulate coolant through the heater detects that it is running without coolant.

What you may notice

• Weak cabin heating
• Coolant warning possible

Likely causes

• LikelyLow coolant level or air in the cooling system
• RarePump

Sources

• static.nhtsa.gov › MC-10176773-0001.pdf · official document

Backed by an official manufacturer document.

From Obdaryn's Volkswagen group pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.