Function Explanation (DTC Detection Outline)
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.
- If the engine coolant temperature detected by the ECT sensor No. 1 is not rising 3°C {5°F} or more during a 7 min period after the engine is started, the PCM determines an ECT sensor No. 1 malfunction and stores a DTC.
 Courtesy of MAZDA MOTORS CORP.
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