P1734
Gear Control Malfunction
P1734 is an OBD-II diagnostic trouble code meaning: Gear Control Malfunction. Common causes: shift solenoids malfunction, low or contaminated transmission fluid. Estimated repair cost: $33–167.
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
Related codes
Error P1734 by Vehicle Brand
FAQ
What does the P1734 code mean?
P1734 is an OBD-II diagnostic trouble code that indicates: Gear Control Malfunction
What causes a P1734 error code?
The most common causes of P1734 include: Shift solenoids malfunction; Low or contaminated transmission fluid; Problems with speed sensors; Mechanical wear of the gearbox.
How do I fix a P1734 diagnostic trouble code?
To fix P1734: Check the level and condition of the transmission fluid. Diagnose the operation of switching solenoids. Check speed and shaft position sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1734?
Do not drive — repair immediately
How much does it cost to fix P1734?
The estimated repair cost for P1734 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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