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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> Transmission >> Automatic Trans >> On-Board Diagnostic - Automatic Transaxle (Mm8AX-EC) >> DTC P0218-00: Automatic Transmission Protection Control

DTC P0218-00: Automatic Transmission Protection Control

System malfunction location Automatic transmission protection control
Detection condition
  • Any one of the following conditions is met:
    • The ATF temperature is more than specified value.
    • The TCM board temperature is more than specified value.
Fail-safe
  • Limits engine torque.
  • Inhibits manual mode.
Possible cause
NOTE:
  • Sudden deceleration may cause excessive tilting of the ATF fluid surface and air may enter the hydraulic passage. At this time, DTC P0218-00: may be detected, however it is a temporary symptom and the automatic transmission is normal.
  • Verify the snap shot data item [TFT] before inspecting each part. Perform the following measures based on the verification results.
    • If the temperature is 115°C {239°F} or more, perform inspection of the items under the following possible causes.
    • If the temperature is less than 115°C {239°F}, after inspecting the ATF level and clearing the DTC, explain to the customer that it is a temporary symptom due to air entering the hydraulic passage caused by excessive tilting of the ATF fluid surface such as by sudden deceleration. (Refer to [AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION ] in service information).
  1. The ATF level is the specified level or more. (Refer to [AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION ] in service information).
  2. Oil cooler malfunction (adhesion of foreign matter) (Refer to [OIL COOLER REMOVAL/INSTALLATION ] in service information).
  3. Malfunction in the following control valve body component parts (Refer to [CONTROL VALVE BODY REMOVAL/INSTALLATION ] in service information).
    • ON/OFF solenoid No. 3
    • ON/OFF solenoid No. 4
  4. Automatic transmission malfunction (automatic transmission internal malfunction) (Refer to [AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION ] in service information).
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (See CLEARING DTC .)
  2. Perform the following procedure to ensure that the DTC has been resolved:
    • Start the engine and wait for 10 s or more.
System wiring diagram
  • Not applicable