OBD
P0780
Shift Malfunction
What it means
P0780 means Shift Malfunction.
Check these first
- Internal transmission mechanical wear
- Faulty shift solenoids
- Low or contaminated transmission fluid
- Valve body wear or sticking valves
- TCM or wiring problem
What to do next
- Check fluid level and condition, and look for debris
- Read all transmission-specific codes to isolate which circuit failed
- Monitor commanded vs actual gear shifts on an OBD-II scanner
- Inspect the valve body and solenoids
- Plan for transmission repair if shifting cannot be corrected with parts
Look up another code
Enter a full code or a symptom. Press / to search. How to read a code
Type a code above, or start from a symptom or a common code.
Updated
Generic SAE J2012 definition. Last updated 2026-08-30.