P0780: Shift Malfunction
Can you still drive? Not recommended. The transmission is exhibiting a general malfunction that could worsen at any time. Drive to a shop for diagnosis at low speeds if necessary.
What Does P0780 Mean?
Code P0780 is a general code indicating the TCM has detected a shift error that does not correspond to a specific solenoid or gear. This catch-all code can appear when the transmission exhibits abnormal shift behavior that the TCM cannot attribute to a single component. It often appears alongside more specific codes that help narrow down the root cause.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Multiple solenoid issues
- Worn transmission clutch packs
- Low or contaminated transmission fluid
- Valve body malfunction
- TCM software issue or internal failure
Symptoms
- Check engine light on
- Erratic shifting pattern
- Hard shifts or no shifts
- Transmission slipping intermittently
- Vehicle shuddering during shifts
Diagnostic Steps
- 1Read all stored and pending transmission codes
- 2Check transmission fluid level and condition thoroughly
- 3Monitor shift adaptation values with scan tool
- 4Test all shift solenoids electrically and functionally
- 5Check for TCM software updates or reprogramming needs
- 6If all external components test good, internal transmission inspection is required
Recommended Parts & Tools
transmission fluid
transmission filter kit
shift solenoid pack
OBD-II scan tool with TCM access
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $200 - $4000 |
| Parts Only (DIY) | $80 - $200 |
| Labor (1-2 hrs @ $100/hr) | $100 - $200 |
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Chat with AI About P0780Commonly Affected Vehicles
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Frequently Asked Questions
What does a general shift malfunction mean?
P0780 means the transmission computer has detected abnormal shifting that it cannot attribute to a single solenoid or gear. Look for additional codes stored alongside P0780 for more specific diagnostic direction.
Can a TCM reprogramming fix P0780?
Sometimes. Some vehicles have TSBs that call for TCM software updates to address shift quality issues. Check with your dealer for any applicable updates before pursuing mechanical repairs.
Is P0780 always a major repair?
Not necessarily. It could be caused by something as simple as low fluid or a single failed solenoid. Always diagnose thoroughly before assuming the worst.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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