DTC P0667; Ecu Internal Temperature Sensor/Performance Problem: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

DTC P0667:00	ECU internal temperature sensor/performance problem
DETECTION CONDITION	Under the following conditions, the difference between ECU internal temperatures of three ECU internal temperature sensors are 15 °C {59 °F} or more: Engine is running. Soaked for 6 hours or more. No malfunction in ECU internal temperature sensor circuit
FAIL-SAFE FUNCTION	Inhibits learning control. Inhibits neutral idle control.
POSSIBLE CAUSE	Control valve body malfunction ECU internal temperature sensor (built-into TCM) malfunction
SYSTEM WIRING DIAGRAM	Not applicable