DTC P0072-00: Ambient Temperature Sensor Circuit Low Input: Notes

DTC P0072:00 (PCM, SKYACTIV-G 2.5T) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0072:00	Ambient temperature sensor circuit low input
DETECTION CONDITION	The PCM monitors the input signal from the ambient temperature sensor. If the voltage from the ambient temperature sensor is below 0.14 V, the PCM determines that the ambient temperature sensor circuit has a malfunction. Diagnostic support note This is a continuous monitor (other). The check engine light does not illuminate. FREEZE FRAME DATA is not available. Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	Ambient temperature sensor connector or terminals malfunction Ambient temperature sensor malfunction Short to ground in wiring harness between ambient temperature sensor terminal A and PCM terminal 2Q PCM connector or terminals malfunction Ambient temperature sensor signal circuit and ground circuit are shorted to each other PCM malfunction
Courtesy of MAZDA MOTORS CORP.