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.
^ 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?
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 .
4. Replace the A/T clutch pressure control solenoid valves A and B.
5. Reset the PCM memory by removing the BACK UP fuse in the passenger's under-dash fuse/relay box for more than 10 seconds.
6. Drive the vehicle for several minutes in 1st, 2nd, 3rd, 4th, and 5th gears in the 1-3 position.
7. Recheck for code P0780.
Does the OBD II scan tool indicate code P0780?
YES - Replace the transmission.
NO - The problem has been corrected.