Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hello and thank you for your question,Can you tell me what model and engine size your 2005 Mercedes has please?
Thank you for that,In most cases providing the cooling system is full and there is no trapped air this code sets due to a thermostat being stuck open. When the thermostat sticks open it dose not allow the engine to reach the correct temperature and this code will set.