BMW P1720 Code:CAN Timeout Control Module
As a car owner, it’s important to be aware of any diagnostic trouble codes (DTCs) that may appear on your vehicle’s dashboard. One such code that BMW drivers may encounter is the P1720 code, which is related to the transmission control module. If you’re experiencing issues with your transmission or related components, it’s crucial to understand the meaning, causes, symptoms, and fixes associated with this code. In this article, we’ll delve into all of these aspects to help you diagnose and resolve any problems related to the BMW P1720 code.
What Does the BMW P1720 Code Mean?
The BMW P1720 code is a diagnostic trouble code (DTC) that indicates a communication error between the transmission control module and other control modules in the vehicle. This code specifically relates to the CAN (Controller Area Network) bus, which is responsible for transmitting data between various electronic control modules in the vehicle. When the transmission control module is unable to communicate with other modules on the CAN bus, it may trigger the P1720 code. This code may indicate issues with the transmission or related components, and should be diagnosed and repaired promptly to prevent further damage to the vehicle.
Signs and Symptoms of BMW P1720 Code
The BMW P1720 code is a diagnostic trouble code (DTC) that indicates issues with the transmission control module. If this code appears on your BMW’s dashboard, it is important to address the issue promptly to avoid further damage to your vehicle. Here are some of the signs and symptoms that may indicate the presence of the P1720 code:
- Check Engine Light: The most common symptom of the P1720 code is the illumination of the check engine light on your BMW’s dashboard. This light may appear as a solid or flashing light, depending on the severity of the issue.
- Transmission Issues: The P1720 code is related to the transmission control module, which means that you may experience issues with your BMW’s transmission. These issues may include difficulty shifting gears, slipping gears, or a complete failure of the transmission.
- Reduced Performance: If your BMW is experiencing transmission issues, you may notice a reduction in performance. Your vehicle may feel sluggish or unresponsive, and you may have difficulty accelerating or maintaining speed.
- Strange Noises: In some cases, the P1720 code may cause your BMW’s transmission to make strange noises. You may hear grinding, whining, or clunking sounds coming from your vehicle.
- Transmission Fluid Leaks: If your BMW’s transmission is experiencing issues, it may also develop leaks. You may notice fluid leaking from your vehicle, which can be a sign of a serious problem.
If you are experiencing any of these symptoms, it is important to have your BMW inspected by a qualified mechanic as soon as possible. Ignoring the P1720 code can lead to further damage to your vehicle and may result in costly repairs. A mechanic can diagnose the issue and recommend the appropriate repairs to get your BMW back on the road.
Possible Causes of BMW P1720 Code
The BMW P1720 code is related to the transmission control module and may indicate issues with the transmission or related components. Here are some of the possible causes of this code:
- Failed transmission control module: The transmission control module (TCM) is responsible for controlling the transmission’s shifting and other functions. If the TCM fails, it can cause the P1720 code to appear.
- Wiring issues: Faulty wiring or connections between the TCM and other components can cause communication errors and trigger the P1720 code.
- Failed transmission solenoid: The transmission solenoid is responsible for controlling the flow of transmission fluid. If it fails, it can cause the transmission to shift improperly and trigger the P1720 code.
- Low transmission fluid: Low transmission fluid levels can cause the transmission to shift improperly and trigger the P1720 code.
- Failed transmission valve body: The transmission valve body is responsible for controlling the flow of transmission fluid. If it fails, it can cause the transmission to shift improperly and trigger the P1720 code.
- Failed transmission pump: The transmission pump is responsible for circulating transmission fluid throughout the transmission. If it fails, it can cause the transmission to shift improperly and trigger the P1720 code.
- Failed transmission: In some cases, the P1720 code may indicate a more serious issue with the transmission itself, such as a failed clutch or gear.
It’s important to note that the P1720 code is not specific to BMW vehicles and may appear on other makes and models as well. If you’re experiencing issues with your transmission or have received the P1720 code, it’s important to have your vehicle diagnosed by a qualified mechanic to determine the root cause of the issue. Depending on the cause, repairs can range from simple fixes like replacing a solenoid or adding transmission fluid, to more complex repairs like replacing the transmission or TCM.
Fixes for BMW P1720 Code
The BMW P1720 code is related to the transmission control module and may indicate issues with the transmission or related components. Here are some of the fixes for this code:
- Check the wiring and connections: The first step in fixing the P1720 code is to check the wiring and connections related to the transmission control module. Loose or damaged connections can cause communication issues between the module and other components, leading to the code.
- Replace the transmission control module: If the wiring and connections are in good condition, the next step is to replace the transmission control module. This is a complex and expensive fix, but it may be necessary if the module is damaged or malfunctioning.
- Check the transmission fluid: Low or dirty transmission fluid can cause issues with the transmission, leading to the P1720 code. Checking and replacing the fluid may be a simple fix for this issue.
- Replace the transmission: In some cases, the P1720 code may indicate a more serious issue with the transmission itself. If this is the case, replacing the transmission may be necessary to fix the problem.
- Reset the code: After making any necessary repairs, it’s important to reset the code and test the vehicle to ensure that the issue has been resolved. This can be done using a diagnostic tool or by disconnecting the battery for a few minutes.
It’s important to note that the fixes for the P1720 code can vary depending on the specific cause of the issue. It’s recommended to have a professional mechanic diagnose and repair the issue to ensure that the correct fix is applied. Ignoring the code can lead to further damage to the transmission and other components, resulting in more expensive repairs down the line.
How Much Will It Take to Fix the BMW P1720 Code?
The cost of fixing the BMW P1720 code will depend on the underlying cause of the issue. The code indicates a problem with the transmission control module, which could be caused by a variety of factors such as faulty wiring, a malfunctioning control module, or a damaged transmission.
The first step in fixing the issue is to diagnose the root cause of the problem. This may involve a thorough inspection of the transmission system, including the control module, wiring, and sensors. Once the issue has been identified, the repair costs can be estimated.
The cost of fixing the BMW P1720 code can vary widely depending on the extent of the damage and the parts and labor required for the repair. In some cases, a simple repair such as replacing a damaged sensor or fixing a loose wire may be all that is needed. However, if the transmission control module needs to be replaced, the cost could be significantly higher.
It is important to have the issue diagnosed and repaired as soon as possible to prevent further damage to the transmission system. Delaying repairs could result in more extensive damage and higher repair costs in the long run.
Possible Causes and Fixes of Code
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Failed transmission control module | Replace transmission control module | $500-$1000 |
| Wiring issues in the transmission control module circuit | Repair or replace damaged wiring | $100-$500 |
| Failed transmission solenoid | Replace transmission solenoid | $150-$300 |
| Low transmission fluid level | Check and refill transmission fluid | $50-$100 |
| Failed transmission pump | Replace transmission pump | $500-$1000 |
Preventing the BMW P1720 Code
The BMW P1720 code is related to the transmission control module and can indicate issues with the transmission or related components. To prevent this code from appearing, it is important to take certain preventive measures. Here are some tips to help you prevent the BMW P1720 code:
1. Regular Maintenance
Regular maintenance is essential to prevent the BMW P1720 code. Make sure to follow the manufacturer’s recommended maintenance schedule for your vehicle. This includes regular oil changes, transmission fluid changes, and other necessary maintenance tasks. Regular maintenance can help prevent issues with the transmission and related components.
2. Check Engine Light
If the check engine light comes on, it is important to have it checked immediately. Ignoring the check engine light can lead to more serious issues, including the BMW P1720 code. Have a professional mechanic diagnose and fix the issue as soon as possible.
3. Avoid Overloading
Overloading your vehicle can put extra strain on the transmission and related components. Avoid overloading your vehicle and make sure to stay within the recommended weight limits. This can help prevent issues with the transmission and related components.
4. Avoid Harsh Driving
Harsh driving, such as sudden acceleration and hard braking, can put extra strain on the transmission and related components. Avoid harsh driving and drive smoothly and steadily. This can help prevent issues with the transmission and related components.
5. Use High-Quality Fluids
Using high-quality fluids, such as transmission fluid, can help prevent issues with the transmission and related components. Make sure to use the manufacturer’s recommended fluids and change them regularly. This can help prevent issues with the transmission and related components.
In conclusion, the BMW P1720 code can indicate issues with the transmission control module and related components. To prevent this code from appearing, it is important to follow the manufacturer’s recommended maintenance schedule, have the check engine light checked immediately, avoid overloading and harsh driving, and use high-quality fluids. By taking these preventive measures, you can help prevent issues with the transmission and related components and avoid costly repairs.
How Serious is the BMW P1720 Code?
The BMW P1720 code is a serious issue that should not be ignored. This code indicates a problem with the transmission control module, which is responsible for controlling the transmission’s shifting and performance. If left unaddressed, this issue can lead to further damage to the transmission and other related components, resulting in costly repairs.
Some of the symptoms of the P1720 code include transmission slipping, harsh shifting, and difficulty shifting gears. These symptoms can affect the vehicle’s performance and safety, making it important to address the issue as soon as possible.
The causes of the P1720 code can vary, but they often include issues with the transmission control module, wiring, or sensors. Diagnosing the issue requires specialized equipment and knowledge, making it important to seek the help of a qualified mechanic.
The cost of repairs for the P1720 code can vary depending on the severity of the issue and the specific components that need to be replaced. However, it is important to address the issue promptly to avoid further damage and more costly repairs down the line.
In conclusion, the BMW P1720 code is a serious issue that should not be ignored. If you are experiencing symptoms of this code, it is important to seek the help of a qualified mechanic to diagnose and repair the issue promptly.
Can You Still Drive with the BMW P1720 Code?
If your BMW is displaying the P1720 code, it is important to address the issue as soon as possible. This code indicates a problem with the transmission control module, which can affect the performance and safety of your vehicle. However, you may still be able to drive your BMW with the P1720 code present.
It is important to note that driving with a malfunctioning transmission can cause further damage to your vehicle and potentially lead to costly repairs. If you notice any symptoms such as rough shifting, slipping gears, or hesitation when accelerating, it is best to avoid driving your BMW until the issue is resolved.
If you must drive your BMW with the P1720 code present, it is recommended to drive cautiously and avoid any sudden acceleration or deceleration. It is also important to have your vehicle inspected by a qualified mechanic as soon as possible to diagnose and repair the issue.
Overall, while it may be possible to drive with the BMW P1720 code present, it is not recommended. It is best to address the issue promptly to ensure the safety and longevity of your vehicle.
Conclusion
If you own a BMW and have encountered the P1720 code, it is important to address the issue promptly to avoid further damage to your vehicle. The code is related to the transmission control module and may indicate issues with the transmission or related components. Causes of the code may include faulty wiring, a malfunctioning control module, or a damaged transmission. Symptoms may include transmission slipping, difficulty shifting gears, or the transmission going into limp mode. It is recommended to have a professional diagnose and repair the issue to ensure proper and safe functioning of your vehicle. Costs associated with repairs may vary depending on the severity of the issue and the specific components that need to be replaced. By addressing the P1720 code promptly, you can ensure the longevity and reliability of your BMW.
FAQ
What does the BMW P1720 code mean?
The BMW P1720 code is a diagnostic trouble code (DTC) that indicates a CAN timeout control module issue related to the transmission control module.
What are the causes of the BMW P1720 code?
The causes of the BMW P1720 code may include faulty wiring, a malfunctioning transmission control module, or issues with the transmission itself.
What are the symptoms of the BMW P1720 code?
The symptoms of the BMW P1720 code may include transmission slipping, difficulty shifting gears, and the transmission going into limp mode.
How is the BMW P1720 code diagnosed?
The BMW P1720 code can be diagnosed using a diagnostic scanner that can read the code and provide information on the specific issue causing the code.
What are the potential fixes for the BMW P1720 code?
The potential fixes for the BMW P1720 code may include repairing or replacing faulty wiring, replacing the transmission control module, or repairing or replacing the transmission itself.
Can I drive my BMW with the P1720 code?
It is not recommended to drive your BMW with the P1720 code as it may cause further damage to the transmission or related components.
How much does it cost to fix the BMW P1720 code?
The cost to fix the BMW P1720 code will vary depending on the specific issue causing the code and the cost of parts and labor in your area. It is recommended to get a quote from a certified mechanic or dealership for an accurate estimate.
Learn about other similar BMW Fault Codes from our BMW OBD 2 Fault Code List.