By Ezra Lane If your Nissan displays a P0733 code, it indicates an issue with the third gear ratio not matching preset parameters, typically caused by low or dirty transmission fluid, defective shift solenoids, or wear in the transmission's mechanical components. You need to check the transmission fluid level, inspect the solenoids and wiring, and diagnosis may require tools such as a diagnostic scan tool and a multimeter. Neglecting these checks may lead to inaccurate troubleshooting, risking further transmission damage and driving safety concerns. Addressing this error promptly can prevent more severe issues, and exploring the detailed causes and corrections could save you costly repairs in the future.
P0733 Nissan Code Meaning
The P0733 code on a Nissan indicates a 3rd gear ratio issue in the transmission.
Causes include low or dirty transmission fluid, faulty shift solenoids, or mechanical problems.
Check fluid levels, wiring, connectors, and service bulletins for solutions.
Error Code P0733 Symptoms
When your Nissan shows the P0733 code, it means there's a problem with shifting into 3rd gear.
Here's what you might notice:
- Check Engine Light On: The check engine light will turn on. This light means there's something wrong with the transmission, especially related to gear shifting.
- Trouble with 3rd Gear: You may have trouble shifting from 2nd to 3rd gear. This can cause delays or even make it impossible to shift, leading to a jerky ride.
- Stuck in Lower Gears: Your car mightn't go past the lower gears, affecting how fast it can go.
In bad cases, the car might enter limp mode, reducing speed and engine power to prevent more damage.
Causes of Nissan P0733 Fault Code
Here's what could cause the P0733 fault code in your Nissan:
- Low or Dirty Transmission Fluid
- The transmission needs fluid to change gears smoothly. If the fluid is low or dirty, it can't lubricate or create enough pressure, making it hard to shift to the right gear.
- Faulty Shift Solenoids
- Shift solenoids help direct fluid to the gears. If they don't work right, usually due to electrical problems or wear, the car mightn't shift into third gear.
- Mechanical Wear and Tear
- Parts inside the transmission can wear out over time. Worn gears or clutches can cause problems with shifting.
- Also, if there are issues with the hydraulic system, the pressure may be wrong, affecting gear changes.
Tools Needed to Diagnose
To diagnose the P0733 Nissan code, you'll need some specific tools. This problem can be with the car's transmission electronics or its mechanical parts.
Here's what you'll need:
- Diagnostic Scan Tool: Use this to read and clear trouble codes from your car's computer. It gives you a starting point for more tests.
- Multimeter: This checks electrical signals and connections in the transmission wires and connectors. It's useful for finding electrical issues with shift solenoids.
- Transmission Fluid Pressure Gauge: This measures the hydraulic pressure inside the transmission. Correct pressure readings help find mechanical problems that might cause incorrect gear ratios.
Also, have a fluid dipstick or transmission fluid checker to see the level and condition of the transmission fluid.
A visual inspection toolkit, with a flashlight and basic hand tools, can help you look at the transmission for damage or leaks.
These tools together help you diagnose the P0733 code.
How to Fix P0733 Nissan Error Code – Step by Step
Step 1:
Before addressing the P0733 Nissan error code, check your vehicle's transmission fluid. Ensure it's at the correct level and is clean, as issues with lubrication and shifting can often cause this error.
Step 2:
Inspect the shift solenoids and the transmission hydraulic control circuit. These components are essential for proper gear shifting. Look for any signs of wear or damage that might be causing malfunctions, as these can trigger the P0733 code.
Step 3:
Examine the wiring harness and connectors associated with the transmission system. Ensure that there are no loose connections or frayed wires, which could disrupt communication or the power supply to critical transmission components.
Step 4:
If the above components are in good condition but the issue persists, use a professional OBD-II scanner. This tool will help you identify any additional codes that might point to other underlying transmission issues.
Step 5:
After completing any necessary repairs or making fluid changes, clear the error code using your scanner. Then, take your vehicle for a test drive to confirm that the transmission now shifts correctly into 3rd gear, ensuring the issue has been resolved.
Common Diagnosis Mistakes
Check the transmission fluid. If it's low or dirty, it can affect how your car shifts gears. This is often missed but can cause big problems.
Avoid these common mistakes when diagnosing the issue:
- Check Shift Solenoids and Hydraulic Controls
- These parts help your car shift gears. If they aren't working right, your car might show the P0733 code even if the electrical parts seem okay.
- Inspect Wiring and Connectors
- Don't just look at the big parts. Check the wires and connections for any damage or rust. These can mess up the signals your car needs to shift gears properly.
- Look at Factory Service Bulletins
- Each car model has specific known issues and fixes. These bulletins can give you important info to help fix the P0733 code problem.
P0733 Nissan Repair Cost
Repairing the P0733 code on your Nissan can cost different amounts depending on the problem. First, you'll need a diagnostic check, which usually costs between $75 and $150 for about an hour of work. This step helps find out if the problem is something simple like low or dirty transmission fluid or a more serious issue.
If the problem is minor, like low fluid levels, you might just need to add more fluid or replace it, which doesn't cost much. If the fluid is dirty, changing it and maybe the filter too could increase the cost a bit due to parts and extra work.
For bigger issues, like broken shift solenoids or problems in the transmission's hydraulic system, the repair costs can be much higher. Fixing these problems needs more parts and work. Solenoids can be expensive, and if the mechanic needs to take apart parts of the transmission, labor costs will be higher.
It's a good idea to get a professional to check what's wrong so you know what repairs are needed. This way, you can be ready for any costs.
Related Error Codes on Nissan
Your Nissan might show the P0733 code along with other related codes like P0730, P0731, P0732, and P0734. These codes are signals from your car's transmission that something might be wrong. Here's what each code means:
| Code | Description |
|---|---|
| P0730 | This code means there's an incorrect gear ratio. It could be caused by worn-out gears or low fluid levels. |
| P0731 | This indicates a problem with the 1st gear, which can make it hard to start driving. |
| P0732 | This code refers to a malfunction in the 2nd gear, which can cause your car to hesitate when you accelerate. |
| P0734 | This code means there's an issue with the 4th gear, leading to higher-than-normal RPMs when cruising. |
These issues can lead to bigger problems if not addressed. It's a good idea to get a complete check-up by a professional to find and fix the exact problems in your car's transmission.
Can I drive safely with P0733 Nissan?
No, it's not safe to drive with a P0733 code on your Nissan.
This code means your car has trouble shifting into 3rd gear.
It can make your car hard to control and might cause bigger problems.
Get it fixed by a mechanic soon.
People Also Ask
Does Ambient Temperature Affect the P0733 Nissan Code Occurrence?
Yes, temperature does affect the P0733 Nissan code. When it's cold, the transmission fluid becomes thick, making it hard to shift gears. When it's hot, the fluid gets too thin, which can also cause problems. Both can trigger the code.
Can a Software Update Resolve the P0733 Error?
Yes, a software update can fix the P0733 error if the problem is with the car's computer system. But first, make sure there are no mechanical problems or low fluid levels causing the issue before trying the update.
Does P0733 Nissan Code Impact Fuel Efficiency?
Yes, the P0733 Nissan code can make your car use more gas. When the car has trouble changing gears, it works harder and uses more fuel. This can cost you more money and make your car not run as well.
How Often Does P0733 Occur in Nissans Generally?
The P0733 code happens sometimes in Nissan cars, especially older ones or if they haven't been taken care of well. It can be more common in places with really hot or cold weather. Regular check-ups can help prevent it.
Is the P0733 Code Specific to Certain Nissan Models?
The P0733 code is not just for one Nissan model. It can happen in different ones like the Maxima, Sentra, and Altima. It's important to look for service bulletins to help fix the problem.