By Ezra Lane You're facing a P0720 error code on your 2006 Nissan Altima, typically caused by issues in the Output Speed Sensor (OSS) circuit. This fault can disrupt your speedometer readings and affect gear shifting. You'll need to check the OSS and its connections for any visible damage or corrosion. Testing the sensor's output with a digital multimeter is crucial to confirm its failure. Replacing a faulty OSS might solve the problem, and it's important to clear the code post-repair to ensure the issue is resolved. Faults in the OSS circuit could lead to dangerous driving conditions, so addressing this promptly ensures safer vehicle operation, sharpening your awareness of underlying vehicular functions.
P0720 Nissan Code Meaning
The P0720 code on a 2006 Nissan Altima indicates a fault in the Output Speed Sensor circuit, affecting speed monitoring.
Inspect the sensor, wiring, and connectors. Clear the code and test drive to ensure speed management stability.
Sensor issues can impact fuel injection, transmission shifts, and cruise control.
Error Code P0720 Symptoms
Error code P0720 can affect how your Nissan Altima drives.
Here's what you might notice if there's a problem with the output speed sensor:
- Speedometer Issues: The speedometer might stop working or show the wrong speed. This can be dangerous on roads with speed limits.
- Trouble with Shifting Gears: The car might shift gears roughly or take longer to shift. This can make driving uncomfortable and might wear out the transmission faster.
- Cruise Control Not Working: If you use cruise control, you might find it's not working. This can make long trips more tiring.
You might also see the Check Engine Light come on, and the car might go into limp mode, which is a safety feature to prevent damage.
Causes of Nissan P0720 Fault Code
In a 2006 Nissan Altima, the P0720 error code usually means something is wrong with the Vehicle Speed Sensor (VSS) or its parts. Knowing what's causing the problem can help you fix it.
Here are some common causes:
1. Broken Vehicle Speed Sensor (VSS):
The VSS keeps track of how fast your car is going. If it breaks or wears out, it can't do its job, which can cause the P0720 error.
2. Bad Wiring or Connectors:
The wires and plugs that connect to the VSS are important. If they get damaged or rusty, the signal gets messed up, which can cause errors.
3. Problems with ECM or TCM:
The Engine Control Module (ECM) or Transmission Control Module (TCM) uses data from the VSS. If these parts aren't working right, they might read the VSS data wrong, causing the P0720 code.
Tools Needed to Diagnose
Before you start fixing the P0720 error in your 2006 Nissan Altima, gather the right tools to make diagnosing easier. Having everything ready will help you work smoothly. Here's what you'll need:
1. OBD-II Scan Tool
This tool lets you find the P0720 code and other related codes. It shows if there are more problems with the car's speed sensor system.
2. Digital Multimeter
Use this to check if the Vehicle Speed Sensor (VSS) is working. It helps you test the sensor's resistance and signal output and see if the electrical connections are okay.
3. Wiring Diagrams for 2006 Nissan Altima
These diagrams help you trace wires and connectors. You can spot any damage or corrosion that might cause the P0720 error.
Also, have some basic hand tools ready for any adjustments.
Remember to wear gloves and glasses to keep safe while you work.
How to Fix P0720 Nissan Error Code – Step by Step
Step 1:
Connect an OBD-II scan tool to your 2006 Nissan Altima to confirm the presence of the P0720 error code and check for any additional trouble codes.
Step 2:
Visually inspect the Vehicle Speed Sensor (VSS) and its associated wiring. Look for any signs of damage, corrosion, or loose connections that could impair functionality.
Step 3:
If the visual inspection doesn't reveal any obvious issues, use a multimeter to test the VSS. Measure the resistance and signal output to ensure they fall within the manufacturer's specified range.
If the VSS tests outside these parameters, it's likely faulty.
Step 4:
Replace the faulty VSS if needed. When installing the new sensor, ensure all electrical connections are secure and clean.
Step 5:
Clear the trouble code from your vehicle's computer, then take your Altima for a test drive. Verify the issue is resolved and monitor the dashboard for any signs of the code reappearing.
Common Diagnosis Mistakes
When trying to figure out why your Nissan Altima has a P0720 code, don't jump to conclusions about the Vehicle Speed Sensor being at fault.
First, check the wires and connectors to see if they're damaged or rusty.
Here are three common mistakes to avoid:
- Overlooking Engine or Transmission Control Modules: Problems with the engine or transmission control units can also cause this code. Make sure to check these modules for updates or problems inside.
- Not Testing the Speed Sensor: Use a multimeter to check the Vehicle Speed Sensor. This will help you see if it's working right. If you skip this, you might end up buying new parts you don't need.
- Forgetting to Clear Codes After Repairs: Once you've fixed or replaced any parts, clear all error codes. Then, drive the car to make sure everything is working fine and there are no leftover issues.
P0720 Nissan Repair Cost
Fixing the P0720 code on a Nissan Altima can cost between $200 and $400. This includes parts and labor.
The Vehicle Speed Sensor (VSS) usually costs $100 to $200. Labor costs can vary from $80 to $150 per hour.
To save money, compare prices at different repair shops. Rates can differ based on location. Some shops might offer package deals or discounts.
Ask for detailed quotes from several places to find the best price. This helps you understand the costs and choose a reliable service.
Related Error Codes on Nissan
When your 2006 Nissan Altima shows the P0720 code, you might see other error codes too. These codes help you understand what's wrong with your car. Here's a list of related codes you might find with P0720:
| Code | Description |
|---|---|
| P0721 | Output Speed Sensor Circuit Range/Performance |
| P0722 | Output Speed Sensor No Signal |
| P0730 | Incorrect Gear Ratio |
| P0500 | Vehicle Speed Sensor Malfunction |
| P0841 | Transmission Fluid Pressure Sensor/Switch Range/Performance |
Each code tells you about a different issue. P0721 and P0722 are about the output speed sensor. P0730 and P0500 might mean there are problems with the transmission. P0841 could mean there's a problem with the transmission fluid pressure. Checking these codes can help you find out what's causing the problems with your car.
Can I drive safely with P0720 Nissan?
A P0720 code in your Nissan means there's a problem with the car's speed sensor.
This can make driving unsafe because the speedometer mightn't work right, and the car could act funny.
It's important to fix it soon to stay safe.
People Also Ask
What Is the Role of the Output Speed Sensor in a Nissan Altima?
The output speed sensor in a Nissan Altima checks how fast the transmission's output shaft is spinning. This helps the car shift smoothly, ensures the speedometer shows the right speed, and makes sure the fuel is used efficiently for the best performance.
How Often Does the Output Speed Sensor Need Replacement?
You usually need to change the output speed sensor when it stops working right. This often happens after driving about 100,000 miles, but it can be different. How you drive and take care of your car can make a big difference.
Can Aftermarket Sensors Be Used for P0720 Error Resolution?
Yes, you can use aftermarket sensors to fix the P0720 error, but make sure they work with your car. They cost less, but quality can differ. Always read reviews and check if there's a warranty before you buy one.
Are There Any Recalls Related to P0720 in Nissan Altima?
As of now, there are no recalls for the Nissan Altima that fix the P0720 problem. It's best to ask your dealership for any updates. You can also try to fix the sensor issue on your own if you want.
Does Weather Affect the Output Speed Sensor's Functionality?
Yes, weather can affect a car's output speed sensor. Very hot or cold weather, rain, or high humidity can cause it to give wrong readings or stop working properly. These weather conditions might cause rust or other problems with the sensor.