DTC Troubleshooting

DTC Troubleshooting: P1780 (49)

DTC P1780: Shift Control System(Transmission Default Mode)

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information. How to Troubleshoot A/T Systems

- This code is caused by a hydraulic control system problem (DTCs P1746 and P1747), and stored simultaneously with DTC P1746 and/or P1747.

1. Clear the DTC with the HDS.

2. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears. Then slow down to a stop.

3. Check whether the DTC P1746 or P1747 is indicated in the DTCs/Freeze Data in A/T Mode Menu with the HDS.

Is DTC P1746 or P1747 indicated?
YES -
- Troubleshoot DTC P1746. P1746

- Troubleshoot DTC P1747. P1746


NO - Intermittent failure, the system is OK at this time.