P0723 code — how to fix error fast

If you face the code P0723 while doing an OBD2 scan of your car, it can be a huge cause of concern due to its relation with the transmission. This one is among the most common such codes out there, which means you’ll need to find a quick solution to avoid severe transmission problems.

Don’t worry, though – we know how it sounds, but our team’s guide on P0723 code meaning can help you avoid dealing with the consequences. We’ll guide you through everything from the code’s main causes, all the way to the potential solutions, so hang on for the details.

Why you can trust REREV’s OBD2 code advice: Our automotive expert researchers with experienced mechanics undertakes a thorough research methodology to deliver precise insights on OBD codes. Find out more about OBD2 codes research process..

What does the P0723 code mean?

The P0723 code is a DTC that indicates a problem with the output speed sensor circuit. The output speed sensor is responsible for detecting the speed of the output shaft of the transmission. When the code appears, it means that the signal from the output speed sensor is not within the expected range.

The consequences of the code can vary depending on the severity of the issue. In some cases, the transmission may not shift properly, or the vehicle may not move at all. Other symptoms can include harsh shifting, erratic speedometer readings, and decreased fuel efficiency.

What causes the P0723 code?

There are several potential issues that could lead to the code’s activation, so it’s essential to properly look into each one of these:

Faulty output speed sensor

The output speed sensor may be faulty or damaged, leading to incorrect readings and triggering the code.

Wiring issues

Wiring issues, such as damaged or corroded wires or poor connections, can also cause the code since the connection between the sensor and the TCM could be compromised.

Failed TCM or PCM

A malfunctioning transmission control module (TCM) or powertrain control module (PCM) can also cause the P0723 code to appear.

Which car models does the P0723 code affect the most?

The P0723 code can affect a wide range of car models. However, some models are more prone to this issue than others. Those models include:

• Nissan Altima: These vehicles were equipped with a specific type of transmission that is more prone to experiencing output speed sensor issues.
• Nissan Murano: Just like the Altima, the code is often said to be spotted by drivers of certain Murano models equipped with the same transmission.
• Nissan Pathfinder: This SUV struggles with the TCM which often leads to the code P0723 being displayed on the scanner tool.

How to diagnose the P0723 code

Now that we’ve come to the practical part, it’s time to diagnose the issue and see what you have at hand in terms of the underlying issue behind the code. Depending on the results, you can apply an appropriate solution, so let’s see what the main methods are:

Use an OBD2 scanner

The first step is to use a scan tool to read the code and any other related codes that may be present. This way you may also get to see other related codes to shed some light on the code’s appearance.

Checking the output speed sensor circuit

Next, you will need to check the output speed sensor circuit, including the wiring and connections, to ensure they are functioning correctly.

Checking the TCM/PCM

You will also need to check the TCM/PCM to ensure it is functioning correctly since common TCM faults have been known to lead to issues with the code even if the output speed sensor is properly working.

Performing transmission tests

Finally, you may need to perform transmission tests to check for any other issues that may be causing the code.

How to fix the P0723 code

Once you have diagnosed the issue, you can move on to fixing it. Here are some potential fixes for each cause of the P0723 code:

Fix a faulty output speed sensor

If the output speed sensor is faulty, it will need to be replaced to fix the code and remove it for good. You can find a replacement sensor for around $50 on average for most models.

Wiring issues

Damaged or corroded wires will need to be replaced and repaired to deal with this code and in this case, you can rely on a trusted mechanic to do the repairs for around $100.

Failed TCM or PCM

Replacing the TCM itself is a bit more expensive repair as it can even lead to servicing bills of up to $1000. It depends on the vehicle model but you should still try updating the TCM software as it may as well be a solution for this issue.

How to prevent the P0723 code

While it is not always possible to prevent the P0723 code from appearing, there are some preventative measures you can take to reduce the risk of it happening again. Here are a few tips:

• Regularly maintain your vehicle, including routine oil changes and transmission fluid changes.
• Address any issues as soon as they arise to prevent them from becoming bigger problems.
• Be mindful of how you drive your vehicle, avoiding harsh acceleration and sudden stops.

By following these tips, you can help prevent the code from appearing again and ensure your vehicle stays in top condition.

Our take

In conclusion, the P0723 code can be a frustrating issue for drivers, and letting it slide for too long without fixing it can lead to severe transmission damage. If you don’t want to risk it progressing into a transmission rebuild, we suggest you stick with this guide and the help of a trusted mechanic to deal with this.