P0734 Nissan Code - 4th. Gear Malfunction
Quick Answer
The P0734 diagnostic trouble code (DTC) for Nissan vehicles indicates a malfunction in the vehicle's fourth gear. Common causes include Low transmission fluid levels, Faulty transmission solenoid or valve body, Worn-out clutch components. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0734 Nissan indicates 4th. Gear Malfunction.
- Common causes
- Common causes include Low transmission fluid levels, Faulty transmission solenoid or valve body, Worn-out clutch components.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0734 Nissan Description
The P0734 diagnostic trouble code (DTC) for Nissan vehicles indicates a malfunction in the vehicle's fourth gear. This means that the transmission is not shifting properly into the fourth gear, which can lead to various performance issues and potentially damage the transmission system if not addressed promptly.
Common Causes of P0734 Nissan
- Low transmission fluid levels
- Faulty transmission solenoid or valve body
- Worn-out clutch components
- Electrical issues within the transmission system
- Transmission control module malfunction
Symptoms of P0734 Nissan
- Engine RPMs surging or fluctuating unpredictably
- Delayed or harsh shifting between gears
- Vehicle struggling to maintain speed or accelerate smoothly
- Transmission slipping in and out of gear
- Unusual noises coming from the transmission when driving
How to Fix P0734 Nissan
- Perform a diagnostic scan to confirm the P0734 code and identify the specific issue causing the fourth gear malfunction.
- Check and refill transmission fluid levels if low, and inspect for any leaks that may be causing the loss of fluid.
- Test the transmission solenoid, valve body, and clutch components for proper function and replace any faulty parts as needed.
- Inspect the electrical connections and wiring within the transmission system, repairing or replacing any damaged components.
- Reset the transmission control module and clear the DTC to see if the issue persists after repairs have been completed.
Cost to Fix P0734 Nissan
The typical repair costs for a P0734 code can vary depending on the specific cause of the fourth gear malfunction and the extent of the repairs needed. On average, the cost of parts and labor for this issue can range from $300 to $800. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is recommended to obtain a detailed estimate from a trusted mechanic or service center to determine the exact cost of resolving this issue for your Nissan vehicle.
Tech Notes for P0734 Nissan
There is a Nissan service bulletin for the following models:
2002 Nissan Sentra
2002 Nissan Altima
2002 Nissan Sentra and Altima Factory Service Bulletin OBDII Code P0734
When is the Code Detected?
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Information for Specific Nissan Models
- P0734 2002 Nissan Altima Sedan — 4th. Gear Malfunction
- P0734 2003 Nissan Altima Sedan — 4th. Gear Malfunction
- P0734 2004 Nissan Altima Sedan — 4th. Gear Malfunction
- P0734 2005 Nissan Altima Sedan — 4th. Gear Malfunction
- P0734 2006 Nissan Altima Sedan — 4th. Gear Malfunction
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