What does code P0734 mean?
The TCM detects an incorrect gear ratio in fourth gear.
OBD-II Code
P0734 — Gear 4 Incorrect Ratio
The TCM detects an incorrect gear ratio in fourth gear.
Common symptoms
- Overdrive not engaging
- high engine RPM
Possible causes
- Faulty solenoid
- worn clutch
- low hydraulic pressure
Initial recommendation
Inspect solenoids, fluid condition and hydraulic pressure.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0734 with your vehicle's actual symptoms for more complete diagnostic guidance.
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