BMW P0735 Code:Gear 5 Incorrect ratio
As a car owner, it’s important to be aware of any potential issues that may arise with your vehicle. One common problem that BMW drivers may encounter is the P0735 code, which is related to the transmission. If you’ve noticed this code pop up on your dashboard, it’s crucial to address the issue promptly to avoid further damage to your car. In this article, we’ll explore the meaning, causes, symptoms, and fixes for the BMW P0735 code, so you can better understand what’s going on with your vehicle and take the necessary steps to get it back in top shape.
Understanding BMW P0735 Code
If you own a BMW vehicle and have come across the P0735 code, it means that there is an issue with the transmission’s fifth gear. The code indicates that the gear ratio is incorrect, which can lead to a variety of problems such as poor acceleration, difficulty shifting gears, and even transmission failure. The P0735 code is a serious issue that requires immediate attention from a qualified mechanic. Ignoring the problem can lead to further damage to your vehicle and potentially put you and your passengers at risk. It’s important to understand the causes, symptoms, and fixes for this code to ensure that your BMW is running smoothly and safely.
Signs and Symptoms of BMW P0735 Code
When the BMW P0735 code appears, it indicates that there is an issue with the transmission’s fifth gear. This code is usually accompanied by a range of symptoms that can vary in severity. Here are some of the most common signs and symptoms of the BMW P0735 code:
- Check Engine Light: The most obvious symptom of the BMW P0735 code is the illumination of the check engine light on the dashboard. This light can indicate a range of issues, but when it appears alongside the P0735 code, it is a clear indication that there is a problem with the transmission.
- Transmission Slipping: Another common symptom of the BMW P0735 code is transmission slipping. This occurs when the transmission fails to engage properly, causing the engine to rev without any corresponding increase in speed. This can be dangerous, especially when driving at high speeds or on steep inclines.
- Difficulty Shifting: If you notice that your BMW is having difficulty shifting gears, it could be a sign of the P0735 code. This can manifest as delayed or jerky shifting, or the transmission may refuse to shift into fifth gear altogether.
- Reduced Fuel Efficiency: When the transmission is not functioning properly, it can cause the engine to work harder than it needs to. This can lead to reduced fuel efficiency, which can be costly over time.
- Strange Noises: Finally, you may notice strange noises coming from your BMW when the P0735 code is present. These can include whining, grinding, or clunking sounds, which can be indicative of a range of transmission issues.
If you notice any of these symptoms in your BMW, it is important to take your vehicle to a qualified mechanic as soon as possible. Ignoring the P0735 code can lead to further damage to your transmission, which can be costly to repair. By addressing the issue early, you can save yourself time, money, and potential safety hazards on the road.
Possible Causes of BMW P0735 Code
The BMW P0735 code is a transmission-related diagnostic trouble code that indicates an incorrect gear ratio in the fifth gear. This code can be triggered by a variety of issues, including:
- Low Transmission Fluid: One of the most common causes of the P0735 code is low transmission fluid. When the fluid level is low, it can cause the transmission to slip, resulting in an incorrect gear ratio.
- Dirty or Contaminated Transmission Fluid: If the transmission fluid is dirty or contaminated, it can cause the transmission to slip or shift incorrectly, leading to the P0735 code.
- Failed Shift Solenoid: The shift solenoid is responsible for controlling the transmission’s shifting. If it fails, it can cause the transmission to shift incorrectly, resulting in the P0735 code.
- Failed Transmission Control Module: The transmission control module (TCM) is responsible for controlling the transmission’s shifting. If it fails, it can cause the transmission to shift incorrectly, leading to the P0735 code.
- Worn or Damaged Transmission Components: Over time, the transmission’s components can wear out or become damaged, leading to an incorrect gear ratio and the P0735 code.
- Electrical Issues: Electrical issues, such as a faulty wiring harness or a blown fuse, can cause the transmission to shift incorrectly, resulting in the P0735 code.
It’s important to note that the P0735 code can be caused by a combination of these issues. Therefore, it’s essential to have a professional mechanic diagnose and repair the issue to ensure that the correct problem is addressed. Ignoring the P0735 code can lead to further damage to the transmission and potentially costly repairs.
Fixes for BMW P0735 Code
When the BMW P0735 code appears, it indicates that there is an issue with the transmission’s fifth gear ratio. This can cause a variety of problems, including poor acceleration, difficulty shifting gears, and even complete transmission failure. Fortunately, there are several fixes that can address this issue and get your BMW back on the road.
1. Check the Transmission Fluid
One of the most common causes of the P0735 code is low or dirty transmission fluid. If the fluid level is low, top it off with the recommended type of fluid. If the fluid is dirty or contaminated, it may need to be flushed and replaced.
2. Replace the Transmission Solenoid
The transmission solenoid is responsible for controlling the flow of fluid through the transmission. If it is malfunctioning, it can cause the P0735 code to appear. Replacing the solenoid can often fix the issue.
3. Repair or Replace the Transmission
If the transmission itself is damaged or worn, it may need to be repaired or replaced. This is a more expensive fix, but it may be necessary if the other solutions do not work.
4. Update the Transmission Control Module (TCM)
In some cases, the P0735 code may be caused by outdated software in the TCM. Updating the software can often resolve the issue.
5. Seek Professional Help
If you are not comfortable performing these fixes yourself, it is important to seek the help of a professional mechanic. They can diagnose the issue and recommend the best course of action to get your BMW back on the road.
In conclusion, the BMW P0735 code should not be ignored as it can lead to serious transmission problems. By checking the transmission fluid, replacing the transmission solenoid, repairing or replacing the transmission, updating the TCM, or seeking professional help, you can address the issue and get your BMW running smoothly again.
How Much Will It Take to Fix BMW P0735 Code?
Fixing the BMW P0735 code can be a costly affair, depending on the severity of the issue. The code indicates that there is an incorrect gear ratio in the fifth gear of the transmission, which can lead to a variety of problems, including poor fuel economy, reduced power, and even transmission failure.
The cost of fixing the code can vary depending on the cause of the issue. If the problem is due to a faulty sensor or solenoid, the repair cost may be relatively low, ranging from $200 to $500. However, if the issue is due to a more severe problem, such as a damaged transmission, the cost can be much higher, ranging from $1,500 to $5,000 or more.
It is important to address the issue as soon as possible to avoid further damage to the transmission and potentially higher repair costs. If you are experiencing symptoms of the P0735 code, such as difficulty shifting gears or a check engine light, it is recommended to take your BMW to a qualified mechanic for diagnosis and repair.
Possible Causes and Fixes of Code
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Low transmission fluid level | Refill transmission fluid to proper level | $50-$100 |
| Dirty or clogged transmission filter | Replace transmission filter | $100-$200 |
| Malfunctioning shift solenoid | Replace shift solenoid | $150-$300 |
| Worn or damaged transmission gears | Repair or replace transmission gears | $1000-$3000 |
| Malfunctioning transmission control module (TCM) | Replace TCM | $500-$1000 |
Preventing BMW P0735 Code: Tips and Tricks
If you own a BMW vehicle, it’s essential to keep an eye on the transmission system to avoid any potential issues. One of the most common problems that BMW owners face is the P0735 code, which indicates an incorrect gear ratio in the fifth gear. To prevent this code from appearing, here are some tips and tricks that you can follow:
1. Regular Maintenance
Regular maintenance is crucial to keep your BMW in good condition. It’s recommended to follow the manufacturer’s maintenance schedule and get your vehicle serviced at regular intervals. This includes changing the transmission fluid, checking the transmission filter, and inspecting the transmission system for any signs of wear and tear.
2. Avoid Overloading
Overloading your BMW can put a strain on the transmission system, leading to potential issues like the P0735 code. Make sure to avoid carrying heavy loads or towing beyond the recommended capacity of your vehicle.
3. Drive Carefully
Driving your BMW carefully can also prevent the P0735 code from appearing. Avoid sudden acceleration or deceleration, and don’t shift gears abruptly. Also, make sure to come to a complete stop before shifting from reverse to drive or vice versa.
4. Check for Leaks
Transmission fluid leaks can cause damage to the transmission system and trigger the P0735 code. Make sure to check for any leaks regularly and get them fixed immediately.
5. Use High-Quality Transmission Fluid
Using high-quality transmission fluid can also prevent the P0735 code from appearing. Make sure to use the recommended type of transmission fluid for your BMW and change it at regular intervals.
6. Get Professional Help
If you notice any signs of transmission issues, such as slipping gears or unusual noises, it’s essential to get professional help immediately. Ignoring these signs can lead to more severe problems and potentially trigger the P0735 code.
In conclusion, preventing the P0735 code from appearing requires regular maintenance, careful driving, and prompt attention to any signs of transmission issues. By following these tips and tricks, you can keep your BMW in good condition and avoid costly repairs.
How Serious is the BMW P0735 Code?
The BMW P0735 code is a serious issue that should not be ignored. This code indicates that there is an incorrect gear ratio in the transmission’s fifth gear. This means that the transmission is not shifting properly, which can cause a variety of problems for the vehicle.
One of the most significant issues that can arise from the BMW P0735 code is damage to the transmission. If the transmission is not shifting properly, it can cause excessive wear and tear on the gears and other components. This can lead to costly repairs or even the need for a complete transmission replacement.
In addition to potential transmission damage, the BMW P0735 code can also cause a decrease in fuel efficiency and performance. The vehicle may experience a loss of power or acceleration, making it difficult to drive safely on the road.
If you notice the BMW P0735 code on your vehicle, it is important to take it seriously and have it addressed by a qualified mechanic as soon as possible. Ignoring the issue can lead to further damage and potentially dangerous driving conditions.
Can You Still Drive with the BMW P0735 Code?
If you have received the BMW P0735 code, it is important to address the issue as soon as possible. This code indicates that there is an incorrect gear ratio in the transmission’s fifth gear, which can cause serious damage to the transmission if left unaddressed.
While it may be tempting to continue driving your BMW with this code, it is not recommended. Continuing to drive with this issue can cause further damage to the transmission, leading to more costly repairs down the line. Additionally, driving with a faulty transmission can be dangerous, as it can cause unexpected shifting or even complete transmission failure while driving.
If you have received the BMW P0735 code, it is best to have your vehicle inspected by a qualified mechanic as soon as possible. They can diagnose the issue and provide you with the necessary repairs to get your vehicle back on the road safely.
Ignoring this transmission issue can lead to more significant problems and potentially put you and your passengers at risk. Don’t take any chances and address the issue promptly.
Conclusion
If you are experiencing the BMW P0735 code, it is important not to ignore it. This code indicates a problem with the transmission of your vehicle, specifically gear 5 incorrect ratio. Ignoring this issue can lead to further damage to your transmission and potentially leave you stranded on the road. It is recommended to take your BMW to a trusted mechanic to diagnose and fix the issue. By addressing the problem promptly, you can avoid costly repairs and ensure the longevity of your vehicle.
FAQ
What does the BMW P0735 code mean?
The BMW P0735 code indicates that there is an issue with the transmission’s fifth gear, specifically that the gear ratio is incorrect.
What are the possible causes of the BMW P0735 code?
The possible causes of the BMW P0735 code include a faulty shift solenoid, a damaged or worn clutch, a malfunctioning valve body, or a problem with the transmission control module.
What are the symptoms of the BMW P0735 code?
The symptoms of the BMW P0735 code may include difficulty shifting gears, slipping gears, reduced fuel efficiency, and an illuminated check engine light.
Can I continue driving my BMW with the P0735 code?
It is not recommended to continue driving your BMW with the P0735 code as it can cause further damage to the transmission and potentially lead to a costly repair.
How is the BMW P0735 code diagnosed?
The BMW P0735 code can be diagnosed using a diagnostic scanner that reads the code and provides information on the specific issue with the transmission. A mechanic may also perform a visual inspection of the transmission and its components.
What are the potential fixes for the BMW P0735 code?
The potential fixes for the BMW P0735 code may include replacing the shift solenoid, repairing or replacing the clutch, replacing the valve body, or reprogramming the transmission control module.
How much does it cost to fix the BMW P0735 code?
The cost to fix the BMW P0735 code can vary depending on the specific issue and the extent of the damage. It is recommended to get a quote from a trusted mechanic before proceeding with any repairs.
Learn about other similar BMW Fault Codes from our BMW OBD 2 Fault Code List.
