2004 - 2009  TOYOTA PRIUS DTC CODE P1121 

P1121:Three way coolant controle valve stock. See image


Replace the coolant control valve assembly. Part Number 16670-2010. See Location here


Mark the hoses so you can connect them back correctly after replacing the valve assembly. 

Fair price for this fix should be between $300 to $400 at the repair shop.

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