Details On DTCs

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC P2B61:00 (PCM, SKYACTIV-G, US) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Coolant control valve circuit range/performance
Detection condition	Determination conditions	The coolant control valve control duty value is 89% or more for a continuous 2 s.
	Preconditions	Not applicable
	Drive cycle	1
	Self test type	CMDTC self test
	Sensor used	Coolant control valve position sensor
Fail-safe function	PCM restricts engine torque.
Vehicle status when DTCs are output	Not applicable
Possible cause	Coolant control valve connector or terminals malfunction PCM connector or terminals malfunction Coolant control valve sticking, or foreign matter penetration Short to ground in coolant control valve control circuit Short to ground in any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Short circuit in coolant control valve control circuits Short circuit between any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Open circuit in coolant control valve control circuit Open circuit in any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Coolant control valve malfunction Coolant control valve position sensor malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.