P0550 code — how to fix error fast

If the diagnostic scanner tool in your vehicle identifies the code P0550, the first step to take is to learn more about it to repair the issue. However, it’s not one of those OBD2 codes with plain and simple meaning, and this creates an issue for quite a few drivers.

Our team realizes how difficult it can be to figure things out, so we wanted to help with this guide on P0550 code meaning and solutions. After going through this guide with us, you’ll be able to identify the root cause that led to the issue in your vehicle and repair it so you can easily remove the code.

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 P0550 code mean?

The P0550 code indicates a malfunction in the power steering pressure sensor circuit. This can lead to a range of symptoms, including difficulty steering, the increased effort required to turn the wheel, and a loss of power steering assist.

If left untreated, the issue can lead to damage to the power steering system, resulting in costly repairs. The thing is – this code can also be triggered by several other issues except for just low steering pressure sensor, so let’s take a closer look at possible culprits.

What causes the P0550 code?

There are several potential causes of the P0550 code, including a faulty power steering pressure sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning power steering control module.

Let’s take a closer look at each of these potential causes.

Faulty power steering pressure sensor

The power steering pressure sensor is responsible for measuring the pressure in the power steering system and sending a signal to the power steering control module. If the sensor is faulty, it can send an incorrect signal or no signal at all, resulting in the P0550 code.

Damaged wiring or connectors in the sensor circuit

The wiring and connectors in the power steering pressure sensor circuit can become damaged over time, leading to a loss of signal or incorrect readings, therefore triggering the code.

Malfunctioning power steering control module

If the power steering control module is malfunctioning, it can send incorrect signals or no signal at all, resulting in the P0550 code. It operates based on the readings from a power steering pressure sensor and it’s always worth checking the module and the sensor when this code appears.

Problem with the power steering pump

The power steering pump is responsible for supplying hydraulic pressure to the power steering system. If the pump is not functioning properly, it can lead to a loss of pressure and trigger the code.

Which car models does the P0550 code affect the most?

Any car equipped with power steering can potentially be affected by this code, but some models are more prone to this issue than others. Here are a few car models that are most likely to be affected by the P0550 code:

• Honda Civic: The 2006-2011 Honda Civic is known for power steering issues, and the P0550 code is a common problem on these models.
• Toyota Corolla: The 2009-2013 Toyota Corolla is also known for power steering issues, and the P0550 code is a common issue on these models as well.
• Ford Focus: The 2012-2018 Ford Focus has been known to have power steering issues that can trigger the code.

How to diagnose the P0550 code

Diagnosing the P0550 code can be a challenging task, as there are several potential causes. However, there are several steps that you can take to diagnose the issue.

Look for other diagnostic codes

Before you begin diagnosing the P0550 code, it’s important to check for any other diagnostic trouble codes that may be present. This can help you narrow down the potential causes and make the diagnosis process more efficient.

Inspect the power steering pressure sensor

The first step in diagnosing this code is to inspect the power steering pressure sensor. Check for any visible damage or wear, and test the sensor using a multimeter to ensure it’s functioning properly.

Check the wiring and connections

Next, inspect the wiring and connectors in the power steering pressure sensor circuit. Look for any signs of damage or wear, and test the wiring using a multimeter to ensure there are no breaks or shorts in the circuit.

Check the power steering control module

If the power steering pressure sensor and wiring are functioning properly, the next step is to check the power steering control module. This can be done using a diagnostic scanner or by testing the module with a multimeter.

Inspect the power steering pump

Finally, if all other potential causes have been ruled out, it’s important to inspect the power steering pump. Look for any signs of wear or damage, and test the pump using a diagnostic scanner or multimeter.

How to fix the P0550 code

Now that you are able to properly diagnose the code and figure out what’s wrong with your car, you can use one of the following solutions to clear the code and deal with the culprit behind it:

Fix a faulty power steering pressure sensor

If the power steering pressure sensor is faulty, it will need to be replaced. This is a relatively simple and inexpensive repair that can be done by a professional mechanic or by the car owner.

Repair damaged wiring and connections

This one could be a more time-consuming repair, but it is still relatively simple and inexpensive as it doesn’t take more than $100 to deal with wiring damage.

Fix a malfunctioning power steering control module

If the power steering control module is malfunctioning, it will need to be replaced. This is a more complex repair that should be done by a professional mechanic.

Problem with the power steering pump

The power steering pump is what gets the steering fluid going and creates the hydraulic pressure within the system. So, if it goes bad and causes a problem with this code, you’ll need to replace the pump to solve it.

How to prevent the P0550 code

Preventing the P0550 code is all about proper maintenance. Here are some preventative measures you can take to avoid the code:

• Regularly check the power steering fluid levels and top off as needed
• Schedule regular maintenance and inspections with a professional mechanic
• Replace the power steering pressure sensor and other components as recommended by the manufacturer
• Avoid driving with low power steering fluid levels or ignoring warning signs of potential issues

By applying these steps to prevent the code from re-appearing, you should be able to deal with the situation once and for all and avoid having to deal with steering-related issues.

Our take

Eventually, the code P0550 can become a real problem if it leads to safety concerns and difficulties steering your vehicle properly. We realized the risks and that’s why our team provided you with this guide in the first place.

We hope you’ll be able to use it to learn more about the origins of this code and ways of diagnosing and fixing it so you can restore perfect mechanical balance to your vehicle.