LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Transmission >> Automatic Trans >> On-Board Diagnostics - Automatic Transaxle >> DTC P0667-00: Ecu Internal Temperature Sensor/Performance Problem (TCM) >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0667-00: Ecu Internal Temperature Sensor/Performance Problem (TCM): Notes

DTC P0667:00 - TCM DETECTION CONDITION AND 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 {27°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