BMW P1479 Code:Brake Boost Vacuum System Mechanical Failure
As a car owner, it can be frustrating to see a warning light pop up on your dashboard. One of the most common issues that BMW drivers face is the P1479 code. This diagnostic trouble code (DTC) indicates a brake boost vacuum system mechanical failure. If you’re experiencing this problem, it’s important to understand the meaning, causes, symptoms, and fixes for the P1479 code. In this article, we’ll provide expert recommendations for repairing the issue and getting your BMW back on the road.
What Does BMW P1479 Code Mean?
The BMW P1479 code is a diagnostic trouble code (DTC) that indicates a mechanical failure in the brake boost vacuum system. This system is responsible for providing additional power to the brakes when the driver applies pressure to the brake pedal. When the brake boost vacuum system fails, it can cause a variety of symptoms, including reduced braking power, longer stopping distances, and a spongy or soft brake pedal. The P1479 code is typically triggered by a malfunctioning vacuum pump, vacuum hose, or vacuum check valve. If left unaddressed, this issue can lead to unsafe driving conditions and potential accidents. Therefore, it is important to have the problem diagnosed and repaired as soon as possible.
Signs and Symptoms of BMW P1479 Code
When the BMW P1479 code appears, it indicates a mechanical failure in the brake boost vacuum system. This can cause a range of symptoms that can affect the performance and safety of your vehicle. Here are some of the most common signs and symptoms of the BMW P1479 code:
- Reduced Brake Power: One of the most noticeable symptoms of the P1479 code is a reduction in brake power. This means that your brakes may feel less responsive or take longer to stop the vehicle.
- Brake Pedal Vibration: Another common symptom is a vibration or pulsation in the brake pedal. This can be felt when you apply the brakes and may indicate a problem with the brake booster or vacuum system.
- Brake Warning Light: If the P1479 code is triggered, it may also cause the brake warning light to come on. This is a clear indication that there is a problem with the brake system and should be addressed immediately.
- Engine Misfires: In some cases, the P1479 code may also cause the engine to misfire or run rough. This can be caused by a vacuum leak or other issues with the brake booster system.
- Poor Fuel Economy: A malfunctioning brake booster system can also cause poor fuel economy. This is because the engine may have to work harder to compensate for the reduced brake power.
If you notice any of these symptoms, it is important to have your vehicle inspected by a qualified mechanic as soon as possible. Ignoring the P1479 code can lead to further damage to your vehicle and potentially dangerous driving conditions. A professional mechanic can diagnose the issue and recommend the best course of action to repair the problem.Possible Causes of BMW P1479 Code
The BMW P1479 code is a diagnostic trouble code (DTC) that indicates a brake boost vacuum system mechanical failure. This code is typically triggered when there is a problem with the brake booster vacuum system, which is responsible for providing additional power to the brakes when the driver applies pressure to the brake pedal. There are several possible causes of this code, including:
1. Vacuum Hose Leak: One of the most common causes of the P1479 code is a vacuum hose leak. This can occur when the vacuum hose that connects the brake booster to the engine becomes damaged or disconnected, causing a loss of vacuum pressure.
2. Faulty Brake Booster: Another possible cause of the P1479 code is a faulty brake booster. This can occur when the diaphragm inside the brake booster becomes damaged or worn, causing a loss of vacuum pressure.
3. Vacuum Pump Failure: In some cases, the P1479 code may be triggered by a vacuum pump failure. This can occur when the vacuum pump that is responsible for creating vacuum pressure in the brake booster fails to operate properly.
4. Faulty Vacuum Check Valve: A faulty vacuum check valve can also cause the P1479 code to appear. This valve is responsible for regulating the flow of vacuum pressure to the brake booster, and a malfunction can cause a loss of pressure.
5. Electrical Issues: Finally, electrical issues such as a faulty brake booster sensor or wiring problems can also trigger the P1479 code.
In conclusion, the possible causes of the BMW P1479 code include a vacuum hose leak, faulty brake booster, vacuum pump failure, faulty vacuum check valve, and electrical issues. It is important to address this issue promptly, as a malfunctioning brake booster can compromise the safety of the vehicle. If you are experiencing this issue, it is recommended to seek the assistance of a qualified mechanic to diagnose and repair the problem.
Fixes for BMW P1479 Code
The P1479 code in BMW vehicles indicates a mechanical failure in the brake boost vacuum system. This can lead to reduced braking power and potentially dangerous driving conditions. Here are some possible fixes for this issue:
- Inspect and replace vacuum hoses: The vacuum hoses in the brake boost system may become damaged or disconnected, leading to a loss of vacuum pressure. Inspect the hoses for any signs of wear or damage, and replace them if necessary.
- Check vacuum pump: The vacuum pump is responsible for creating the vacuum pressure needed for the brake boost system to function properly. If the pump is faulty or not working correctly, it may need to be replaced.
- Replace brake booster: If the brake booster itself is damaged or malfunctioning, it may need to be replaced. This is a more involved repair and may require professional assistance.
- Check brake pedal position sensor: The brake pedal position sensor is responsible for detecting when the brake pedal is depressed and sending a signal to the brake booster. If this sensor is faulty, it may need to be replaced.
- Reset the code: After any repairs have been made, the P1479 code will need to be reset using a diagnostic tool. This will clear the code from the vehicle’s memory and allow for proper operation of the brake boost system.
It is important to address the P1479 code as soon as possible to ensure safe driving conditions. If you are unsure about how to proceed with repairs, it is recommended to seek the assistance of a professional mechanic. The cost of repairs will vary depending on the extent of the damage and the specific parts that need to be replaced.
How Much Will It Take to Fix BMW P1479 Code?
The cost of fixing the BMW P1479 code can vary depending on the severity of the issue and the type of repair needed. In general, the cost can range from $100 to $500 or more. However, it’s important to note that this is just an estimate and the actual cost may be higher or lower depending on the specific circumstances.
The first step in fixing the P1479 code is to diagnose the problem. This may involve a visual inspection of the brake boost vacuum system or using a diagnostic tool to read the code and identify the underlying issue. Once the problem has been identified, the repair process can begin.
The most common fix for the P1479 code is to replace the brake booster vacuum hose or the brake booster vacuum pump. In some cases, the entire brake booster may need to be replaced. The cost of the parts and labor will depend on the specific repair needed and the mechanic or dealership performing the work.
It’s important to address the P1479 code as soon as possible to avoid potential safety issues while driving. If you’re unsure about the cost or repair process, it’s recommended to consult with a certified mechanic or dealership for expert advice.
Possible Causes and Fixes of Code
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Brake booster vacuum hose leak | Replace brake booster vacuum hose | $50-$150 |
| Brake booster vacuum check valve failure | Replace brake booster vacuum check valve | $100-$200 |
| Brake booster vacuum pump failure | Replace brake booster vacuum pump | $300-$500 |
| Brake booster mechanical failure | Replace brake booster | $500-$1000 |
Preventing BMW P1479 Code
The BMW P1479 code is a brake boost vacuum system mechanical failure that can cause serious issues with your vehicle’s braking system. To prevent this code from appearing, there are several preventive measures that you can take.
1. Regular Maintenance: Regular maintenance of your BMW vehicle is crucial to prevent any issues with the brake boost vacuum system. Make sure to follow the manufacturer’s recommended maintenance schedule and have your vehicle inspected by a professional mechanic regularly.
2. Check Vacuum Hoses: The vacuum hoses in your BMW’s brake boost system can become damaged or worn over time, leading to a mechanical failure. Regularly inspect the vacuum hoses and replace any that are damaged or worn out.
3. Check Brake Booster: The brake booster is an essential component of the brake boost system. Regularly inspect the brake booster for any signs of wear or damage and replace it if necessary.
4. Check Vacuum Pump: The vacuum pump is responsible for creating the vacuum that powers the brake booster. Regularly inspect the vacuum pump for any signs of wear or damage and replace it if necessary.
5. Use High-Quality Parts: When replacing any components of the brake boost system, make sure to use high-quality parts that are designed for your BMW vehicle. Using low-quality or aftermarket parts can lead to mechanical failures and other issues.
6. Drive Carefully: Finally, driving carefully and avoiding sudden stops or hard braking can help prevent mechanical failures in the brake boost system. This can also help extend the life of your vehicle’s braking system.
In conclusion, preventing the BMW P1479 code requires regular maintenance, checking vacuum hoses, brake booster, and vacuum pump, using high-quality parts, and driving carefully. By following these preventive measures, you can help ensure that your BMW vehicle’s brake boost system remains in good working condition and avoid costly repairs.
How Serious is the BMW P1479 Code?
The BMW P1479 code is a serious issue that should not be ignored. This code indicates a mechanical failure in the brake boost vacuum system, which is responsible for providing additional power to the brakes when the driver applies pressure to the brake pedal. If this system fails, it can result in reduced braking power, which can be dangerous and potentially lead to accidents.
Some of the symptoms of the P1479 code include a spongy or soft brake pedal, reduced braking power, and increased stopping distances. If you experience any of these symptoms, it is important to have your vehicle inspected by a qualified mechanic as soon as possible.
The causes of the P1479 code can vary, but some of the most common include a faulty brake booster, a vacuum leak in the brake booster system, or a malfunctioning vacuum pump. Depending on the cause of the issue, repairs can range from relatively simple and inexpensive to more complex and costly.
In conclusion, the BMW P1479 code is a serious issue that should not be ignored. If you experience any symptoms of this code, it is important to have your vehicle inspected by a qualified mechanic to determine the cause of the issue and make any necessary repairs.
Can You Still Drive with the BMW P1479 Code?
If your BMW has triggered the P1479 code, it is an indication of a mechanical failure in the brake boost vacuum system. This can cause a variety of issues, including reduced braking power and poor acceleration. While it is possible to continue driving with the code, it is not recommended.
Driving with the P1479 code can be dangerous, as it can compromise your vehicle’s ability to brake effectively. This can lead to accidents and other safety hazards on the road. Additionally, the issue can cause damage to other components of your vehicle, leading to more costly repairs down the line.
If you have received the P1479 code, it is best to have your vehicle inspected by a qualified mechanic as soon as possible. They can diagnose the issue and provide recommendations for repairs. In the meantime, it is best to avoid driving your BMW until the issue has been resolved to ensure your safety and prevent further damage to your vehicle.
Conclusion
Overall, the BMW P1479 code indicates a mechanical failure in the brake boost vacuum system. This can lead to decreased braking performance and potentially dangerous driving conditions. It is important to address this issue promptly to ensure the safety of both the driver and passengers. The causes of this code can vary, but common culprits include vacuum leaks, faulty vacuum pumps, and damaged brake boosters. It is recommended to have a professional mechanic diagnose and repair the issue to ensure proper and safe repairs. The cost of repairs can vary depending on the severity of the issue and the specific parts that need to be replaced. However, investing in proper repairs can ultimately save money and prevent further damage to the vehicle.
FAQ
What is the BMW P1479 code?
The BMW P1479 code is a diagnostic trouble code that indicates a brake boost vacuum system mechanical failure in BMW vehicles.
What are the symptoms of the BMW P1479 code?
The symptoms of the BMW P1479 code may include a decrease in brake assist, a hard brake pedal, and an illuminated check engine light.
What are the causes of the BMW P1479 code?
The causes of the BMW P1479 code may include a faulty brake booster, a vacuum leak in the brake booster system, or a malfunctioning vacuum pump.
How is the BMW P1479 code diagnosed?
The BMW P1479 code is diagnosed using an OBD-II scanner, which will retrieve the code and any related codes. The mechanic will then perform a visual inspection of the brake booster system and test the vacuum pump and brake booster for proper operation.
Can I still drive my BMW with the P1479 code?
It is not recommended to drive your BMW with the P1479 code as it may affect the performance of your brakes and compromise your safety on the road.
How much does it cost to fix the BMW P1479 code?
The cost to fix the BMW P1479 code may vary depending on the cause of the issue and the extent of the repairs needed. It is recommended to get a quote from a certified mechanic.
How can I prevent the BMW P1479 code from occurring?
To prevent the BMW P1479 code from occurring, it is recommended to have your brake booster system inspected and maintained regularly, and to address any issues promptly.
Learn about other similar BMW Fault Codes from our BMW OBD 2 Fault Code List.