DTC Troubleshooting

DTC Troubleshooting: P0797

DTC P0797: A/T Clutch Pressure Control Solenoid Valve C Stuck ON

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information. How To Troubleshoot A/T Systems

1. Warm up the engine to normal operating temperature (the radiator fan comes on).

2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.

3. Drain the ATF ATF Replacement through a strainer. Inspect the strainer for metal debris or excessive clutch material.

Does the strainer have metal debris or excessive clutch material?
YES - Replace the transmission, then go to step 11.

NO - Replace the ATF, ATF Replacement then go to step 4.


4. Clear the DTC with the HDS.

5. Test-drive the vehicle with the shift lever in D for at least 11 seconds, and let the transmission shift through all five gears, then slow down to a stop.

6. Monitor the OBD STATUS for P0797 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?
YES - Go to step 7.

NO - Intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, return to step 5 and recheck.


7. Clear the DTC with the HDS.

8. Select Clutch Pressure Control (Linear) Solenoid C in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve C with the HDS.

Does the HDS indicate NORMAL?
YES - Intermittent failure, the system is OK at this time.

NO - Follow the instructions indicated on the HDS by the test result, but if the HDS has not determined the cause of the failure, go to step 9. If any part is replaced, go to step 10.


9. Inspect A/T clutch pressure control solenoid valve C. A/T Clutch Pressure Control Solenoid Valve C Test

Does A/T clutch pressure control solenoid valve C work properly?
YES - Repair the hydraulic system related to shift valve C, or replace the transmission, then go to step 10.

NO - Replace A/T clutch pressure control solenoid valve C, A/T Clutch Pressure Control Solenoid Valve C Replacement then go to step 10.


10. Clear the DTC with the HDS.

11. Test-drive the vehicle with the shift lever in D for at least 11 seconds, and let the transmission shift through all five gears, then slow down to a stop.

12. Monitor the OBD STATUS for P0797 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?
YES - Troubleshooting is complete.

NO - Return to step 7 and recheck. If the HDS indicates NOT COMPLETED, return to step 11 and recheck.