P0780 Code: Shift Error
🟠 Moderate severity · drivable
Drivable, but the transmission may slip or fail to complete shifts. Drive gently until it's diagnosed.
What P0780 means
The transmission computer detected that a shift didn't happen the way it was commanded. This is a general shift error, which means the transmission slipped, failed to engage a gear, or took too long to shift. It's a warning sign that the transmission needs attention before more damage occurs.
Symptoms
- Check engine light is on
- Transmission slipping between gears
- Delayed or harsh shifts
- Engine revs without the car speeding up
Common causes
- most common: Low or dirty transmission fluid
- common: Worn clutch packs or bands inside the transmission
- common: Faulty shift solenoid or valve body
- less common: Faulty transmission control module
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Check and top up the transmission fluid level and condition | Yes | $20–60 |
| Replace faulty shift solenoids or service the valve body | Mechanic | $300–1200 |
| Rebuild or replace the transmission if internal parts are worn | Mechanic | $1500–3500 |
Frequently asked questions
Can I drive with a P0780 code?
Yes, but the transmission may slip or fail to shift. Drive gently and get it diagnosed soon to avoid costly damage.
What does shift error mean?
It means the transmission didn't complete a gear change the way the computer commanded, usually because of slipping, low fluid, or worn parts.
How much does it cost to fix a P0780?
It depends on the cause: a fluid service is cheap, but a worn-out transmission can cost $1,500–$3,500 to rebuild.
Related codes
P0781
P0781 Code: 1-2 Shift Malfunction
P0782P0782 Code: 2-3 Shift Malfunction
P0700P0700 Code: Transmission Control System Malfunction
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.