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DTC P0734:00 [FS5A-El]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0734:00 Gear 4 incorrect ratio
DETECTION CONDITION 
  • The TCM detects that revolution ratio of the input revolution to output revolution is more than 1.249 or less than 0.6 when the following conditions are met.
    • 4GR
    • Vehicle speed: more than 25 km/h {16 mph}
  • The TCM detects that revolution ratio of the input revolution to output revolution is between 1.09-0.91 when the following conditions are met.
    • 4GR
    • Vehicle speed: more than 46 km/h {29 mph}
    • TCC operation: Off
Diagnostic support note 
  • The MIL does not illuminate.
  • The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
  • PENDING CODE is not available.
  • FREEZE FRAME DATA is not available.
  • The DTC is stored in the TCM memory.
POSSIBLE CAUSE 
  • Deteriorated ATF
  • ATF level low
  • Solenoid valve malfunction
    • Pressure control solenoid A
    • Shift solenoid A
    • Shift solenoid B
    • Shift solenoid C
  • Line pressure malfunction
  • Stall speed malfunction
  • Forward clutch slipping
  • 2-4 brake band slipping
  • 3-4 clutch slipping
  • Primary control valve body malfunction
  • TCM malfunction