P0786 Code: Shift Timing Solenoid A Range/Performance
🟠 Moderate severity · drivable
Drivable, but the transmission may shift late, harshly, or slip; avoid hard acceleration.
What P0786 means
Shift timing solenoid A controls the flow of fluid that changes gears. This code means the solenoid responds, but its operation is outside the expected range — it may be sticking, slow, or blocked, so gear changes can be delayed or rough.
Symptoms
- Check engine light is on
- Late or harsh gear shifts
- Transmission slipping between gears
- Poor acceleration
- Reduced fuel economy
Common causes
- most common: Sticking or contaminated shift solenoid A
- common: Low or dirty transmission fluid
- less common: Worn internal transmission parts
- less common: Damaged wiring or connector
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Change the transmission fluid and filter | Yes | $60–150 |
| Clean or replace shift timing solenoid A | Mechanic | $150–400 |
| Have the transmission inspected for internal wear | Mechanic | $150–500 |
Frequently asked questions
Can I drive with a P0786 code?
Yes, but expect rough or late shifts and possible slipping. Keep driving light and have it fixed soon.
What is the difference between P0785 and P0786?
P0785 is a broken electrical circuit. P0786 means the solenoid works but performs out of range, often from sticking or dirty fluid.
How much does it cost to fix P0786?
A fluid and filter change is about $60–$150. Replacing the solenoid is typically $150–$400 with labor.
Related codes
P0785
P0785 Code: Shift Timing Solenoid A Circuit Malfunction
P0787P0787 Code: Shift Timing Solenoid A Circuit Low
P0700P0700 Code: Transmission Control System Malfunction
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.