P1734
Gear Control Malfunction
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)
Symptoms
- Incorrect gear shifting
- Switching delays
- Switching to emergency mode
- Dips during acceleration
- Increased fuel consumption
Causes
- Shift solenoids malfunction
- Low or contaminated transmission fluid
- Problems with speed sensors
- Mechanical wear of the gearbox
- Transmission control unit malfunction
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the operation of switching solenoids
- Check speed and shaft position sensors
- Scan the control unit for errors
- If necessary, replace worn mechanical components