P0782
2-3 Shift Malfunction
The TCM detects a fault during the 2-to-3 upshift. Gear ratio after shift command does not match third gear expected ratio.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Shift solenoid B faultyCommon
- 2-3 clutch slippingPossible
Parts involved
- Shift Solenoid B
- Transmission Clutch Pack
- Valve Body
P0782 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.