P0780

DTC P0780: Mechanical Problem in Hydraulic Control System for Shift Solenoid Valve A and A/T Clutch Pressure Control Solenoid Valves A and B, or Problem in Hydraulic Control System

NOTE:
- Record all freeze data before you troubleshoot.
- Keep replacement solenoid valves on hand:
- Torque converter clutch solenoid valve/shift solenoid valve A
- A/T clutch pressure control solenoid valves A and B

1. Check whether the OBD II scan tool indicates another code.
Does the OBD II scan tool indicate another code?
YES - Perform the Troubleshooting Flowchart for the indicated Code(s). Recheck for code P0780 after troubleshooting.
NO - Go to step 2.
2. Turn the ignition switch OFF.
3. Replace the torque converter clutch solenoid valve/shift solenoid valve A, and the A/T clutch pressure control solenoid valves A and B.
4. Reset the PCM memory by removing the BACK UP fuse in the passenger's under-dash fuse relay box for more than 10 seconds.
5. Drive the vehicle for several minutes in 1st, 2nd, 3rd, and 4th gears in lit; position.
6. Recheck for code P0780.
Does the OBD II scan tool indicate code P0780?
YES - Replace the transmission.
NO - The problem has been corrected.