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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 P0730-00: Shift Ratio Malfunction

DTC P0730-00: Shift Ratio Malfunction

System malfunction location Shift ratio malfunction
Detection condition
  • Normal shift ratio is not configured.

    Precondition 

  • Vehicle is being driven (not during shifting)
Fail-safe
  • Not applicable
Possible cause
  1. ATF is less than Specified value. (Refer to [AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION ] in service information).
  2. Malfunction in the following control valve body component parts (Refer to [CONTROL VALVE BODY REMOVAL/INSTALLATION ] in service information).
    • Shift solenoid
    • TCM
  3. Automatic transmission malfunction (clutch slippage in automatic transmission) (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:
    • Drive the vehicle. (Use all gears from 1st to 8th gear)
System wiring diagram
  • Not applicable