<![CDATA[iFixit - Answers With Device "2003 - 2006 Smart Roadster"]]> https://www.ifixit.com/Answers/Device/2003_-_2006_Smart_Roadster?rss=yes en-US Thu, 16 Apr 2026 01:46:25 -0700 <![CDATA[2003 - 2006 Smart Roadster: P20B1 Faulty Code - 451 2011 Smart Fortwo 62Kw]]> Vehicle with P20B1 Faulty Code, described as “Reductant Heater Coolant Control Valve Circuit/Open”.

Engine is temperature sometimes is over 212F. What could be the root cause?

Stuck Thermostat?

Thanks in advance.

⟐ Answer edited October 23, 2021 at 21:43 MST

]]> https://www.ifixit.com/Answers/View/709775/P20B1+Faulty+Code+-+451+2011+Smart+Fortwo+62Kw https://www.ifixit.com/Answers/View/709775 Sat, 23 Oct 2021 21:43:43 -0700