DTC P0073-00: Ambient Temperature Sensor Circuit High Input: Outline

DTC P0073:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Ambient temperature sensor circuit high input
Detection condition	The PCM monitors the input signal from the ambient temperature sensor. If the voltage from the ambient temperature sensor is above 4.9 V, the PCM determines that the ambient temperature sensor circuit has a malfunction.
Fail-safe	Not applicable
Possible cause	Ambient temperature sensor connector or terminals malfunction PCM connector or terminals malfunction Short to power supply in ambient temperature sensor signal circuit Open circuit in any of the following ambient temperature sensor circuits. Signal circuit Ground circuit Ambient temperature sensor malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.