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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 P0746-00: Pressure Control Solenoid Valve: Stuck Off

DTC P0746-00: Pressure Control Solenoid Valve: Stuck Off

System malfunction location Pressure control solenoid valve: Stuck off
Detection condition
  • Abnormal increase in line pressure is determined.

    Precondition 

  • Vehicle is being driven (not during shifting)
Fail-safe
  • Limits engine torque.
  • Inhibits learning control.
  • Inhibits manual mode.
  • Inhibits switching from engine-only driving to EV driving. (With Mazda M Hybrid boost)
  • Inhibits i-stop control. (Without Mazda M Hybrid boost)
  • Inhibits AAS.
Possible cause
  1. Control valve body malfunction (Pressure control solenoid valve malfunction) (Refer to [CONTROL VALVE BODY 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 under the following condition:
    • Vehicle speed: 30 km/h {19 mph} or more
System wiring diagram
  • Not applicable