P0780

DTC P0780: Mechanical Problem in Hydraulic Control System of 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 and review General Troubleshooting Information before you troubleshoot.
^ If code P0730 and P0780 are indicated, perform troubleshooting for P0780 first.
^ Keep these replacement solenoid valves on hand:
- 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 other than P0730?
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 shift solenoid valve A and A/T clutch pressure control solenoid valves A and B.
4. Reset the PCM memory with the PGM Tester or by removing the No. 13 fuse in the passenger's underdash fuse/relay box for more than 10 seconds. Perform the idle learn procedure. If fuse No. 13 was removed, perform the power window control unit reset procedure.
5. Drive the vehicle for several minutes in 1st, 2nd, 3rd, 4th, and 5th gears in the [D] 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.