DTC Troubleshooting: P0780
DTC P0780: Shift Error
NOTE:
Before you troubleshoot, review the General Troubleshooting Information.
This code is stored whenever DTCs P1898 and P1899 are detected.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0780 Shift Error
      

1.
Transmission Fluid (HCF-2) check:

Transmission Fluid (HCF-2) check
?1.
Start the engine, and warm it up to normal operating temperature (the radiator fan comes on twice).

?2.
Make sure that the transmission is filled to the proper level, and check for fluid leaks.

?3.
Drain the transmission fluid (HCF-2) through a strainer. Inspect the strainer for metal debris or excessive clutch material.

Does the strainer have metal debris or excessive clutch material?

     
YES
     
     
     
     
NO
     
     
     
2.
DTC check:

DTC check
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Test-drive the vehicle in D position/mode until the vehicle speed reaches 37 mph (60 km/h). Slow down and stop the vehicle. Then accelerate from a stop at full throttle in D position/mode until the vehicle speed reaches 37 mph (60 km/h).

?4.
Turn the engine off. Repeat the test-drive in step 2-3 again.

?5.
Check for other Pending or Confirmed DTCs indicated along with DTC P0780 with the HDS.
NOTE: P0780 means there is one or more CVT DTCs regarding the shift control system.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0780 Shift Error
      
P1898 CVT Drive Pulley Pressure Control Valve Stuck ON or CVT Driven Pulley Pressure Control Valve Stuck OFF
      
P1899 CVT Drive Pulley Pressure Control Valve Stuck OFF or CVT Driven Pulley Pressure Control Valve Stuck ON
      

Are there other DTCs?

     
YES
     
     
     
The failure is duplicated. Go to the indicated DTC's troubleshooting.?
     
NO
     
     
     
There are no DTCs along with DTC P0780. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P0780 goes away and the PCM was updated, troubleshooting is complete. If DTC P0780 goes away and the PCM was substituted, replace the original PCM.?