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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (On-Board Diagnostics - A/T) >> DTC P0780-00: Gear Shifting Malfunction >> Notes

DTC P0780-00: Gear Shifting Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0780:00 Gear shifting malfunction
DETECTION CONDITION 
  • Gear ratio malfunction while in any gear 1st to 6th or clutch-slip DTC (P0729:00, P0731:00, P0732:00, P0733:00, P0734:00, P0735:00, P1728:00) occurs and vehicle is driven under gear ratio malfunction condition from fail-safe, or use of gear speeds in which clutch slip occurs is restricted.
  • Determined that vehicle may be in danger due to clutch not engaging by TCM direction according to signal from the oil pressure switch.
FAIL-SAFE FUNCTION 
  • Inhibits learning control.
  • Inhibits manual mode.
  • Inhibits neutral idle control.
  • Inhibits AAS.
POSSIBLE CAUSE 
  • ATF is less than specified value
  • On/off solenoid malfunction
  • Pressure control solenoid malfunction
  • Shift solenoid malfunction
  • Oil pressure switch circuit malfunction
  • Oil pressure switch malfunction
  • Clutch slippage
  • ATF leakage from clutch circuit
  • Control valve body malfunction
SYSTEM WIRING DIAGRAM  Not applicable