DTC U063F:00 [Pcm (SKYACTIV-G)]: Outline

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DTC U063F:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	SENT communication: Communication error between coolant control valve position sensor and PCM
Detection condition	When any of the following conditions is met: SENT communication line malfunction between coolant control valve position sensor and PCM The PCM detected a SENT communication type communication error from the coolant control valve position sensor.
Fail-safe	Not applicable
Possible cause	SENT communication line error between coolant control valve position sensor and PCM Coolant control valve connector or terminals malfunction PCM connector or terminals malfunction Open circuit in any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Short to ground in any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Short to power supply in any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Short circuit between any of the following coolant control valve position sensor circuits. Power supply circuit Signal circuit Ground circuit Coolant control valve position sensor malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.