P0780

DTC P0780: Problem in Hydraulic Control System
2003 AT-PZEV (SULEV) and 2004-2005 AT-PZEV Models

NOTE: Record all freeze data and review General Troubleshooting Information before you troubleshoot.

1. Check whether the HDS indicates DTC P1898 and/or P1899 simultaneous with the DTC P0780.

NOTE: P0780 means there is A/T DTC P1898 and/or P1899 about the hydraulic control system.

Does the HDS indicate DTC P1898 and/or P1899?
YES- Perform the troubleshooting for the indicated DTC P1898 and P1899.
NO- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.