Parts
$50-3000+
P0733 — Gear 3 Incorrect Ratio
CAUTIONIs it safe to drive? The 3rd gear ratio is wrong. Slipping in 3rd is a common highway hazard — drive gently and get it checked.
What P0733 means
The measured ratio in 3rd gear doesn't match spec. On many automatics, 3rd-gear clutch pack issues show up as slipping at highway cruise. Exact cause and repair depth varies by make.
Most likely causes (in order)
- Low or burnt transmission fluid
- Worn 3rd-gear clutch pack
- Shift solenoid for 3rd gear
- Speed sensor error
- Valve body issue
Symptoms you might notice
- RPM flare at highway cruise
- Slipping on 2-3 shift
- Limp mode
What to check first
Note if the slip is on the upshift into 3rd or sustained. Fluid condition and solenoid test first; rebuild-level diagnosis requires brand-specific clutch pack data.
Repair cost & difficulty
Labor
3-20+ hr
Difficulty
Shop job