The B1255 code is an error code that can trigger the engine light or service engine soon warning light in certain vehicles. It specifically indicates a problem with the left rear tire pressure sensor and transmitter assembly, which is monitored by the body control module.
Symptoms of this issue may include the engine light or service engine soon warning light illuminating on the dashboard.
There are several potential causes for the B1255 code, including reprogramming issues, faulty components within the tire pressure sensor and transmitter assembly, or a malfunctioning body control module.
To fix this issue, it is recommended to consult a professional technician or refer to the vehicle’s factory service manual for guidance. They will be able to properly diagnose the problem and determine the most appropriate solution, whether it involves reprogramming, replacing faulty components, or addressing a malfunctioning body control module.
Code B1255: Trigger the engine light or service engine soon warning
What does it mean
The B1255 code indicates an issue with the left rear tire pressure sensor and transmitter assembly.
To fix it, reprogram the sensor and transmitter assembly by referring to factory service manuals for instructions.
Check for any faults with the body control module (BCM) as well, as BCM programming issues can trigger this code.
Resolving these steps will efficiently resolve the B1255 code.
What are the symptoms
The B1255 code is associated with certain symptoms that you should be aware of. One common symptom is the illumination of the engine light or service engine soon warning light. It’s important not to ignore this code as it can have various effects on your vehicle.
One effect of the B1255 code is a decrease in fuel efficiency. This happens because the tire pressure sensor and transmitter assembly, which are responsible for monitoring tire pressure, are affected. Proper tire pressure is crucial for optimal fuel consumption, so ignoring this code can result in decreased fuel efficiency.
Another consequence of ignoring the B1255 code is potential tire damage. Without proper tire pressure monitoring, your tires may become overinflated or underinflated. This can lead to uneven wear, reduced traction, and an increased risk of tire blowouts.
Safety concerns are also associated with the B1255 code. Incorrect tire pressure can impact the handling and stability of your vehicle, especially during emergency maneuvers or adverse road conditions. This can significantly raise the risk of accidents or loss of control.
To ensure that your vehicle maintains its performance, fuel efficiency, and safety, it is important to promptly address the B1255 code. Taking action as soon as possible will help prevent any further complications.
What are the causes
Causes of B1255 code:
Reprogramming issue with left rear tire pressure sensor and transmitter assembly:
- Check if the sensor and transmitter assembly have been programmed correctly.
- See if there are any software updates or recalls for your vehicle model.
Common issues with the left rear tire transmitter assembly:
- Look for physical damage like corrosion or loose connections.
- Check for signs of wear or deterioration in the wiring harness and connectors.
Other potential causes not listed:
- It’s possible that the left rear tire pressure sensor is faulty.
- The body control module (BCM) may be malfunctioning.
What Tools are Needed to diagnose
To diagnose the B1255 code and identify the cause of the issue, professional technicians will need specific tools and equipment. Here are some key tools that are necessary for troubleshooting the B1255 code:
- OBD-II scanner: This tool is essential for reading and retrieving the B1255 code from the vehicle’s onboard computer.
- Multimeter: Technicians use a multimeter to measure voltage, resistance, and continuity in the electrical circuits connected to the left rear tire pressure sensor and transmitter assembly.
- Tire pressure gauge: This tool is required to manually check the tire pressure in the left rear tire.
In addition to these essential tools, there might be some specialized tools needed for accurate diagnosis of the B1255 code:
- Factory service manual: This manual provides specific instructions and diagrams for diagnosing and fixing the B1255 code based on different vehicle makes and models.
- TPMS tool: Certain vehicles may require a specialized TPMS tool to program or reprogram the left rear tire pressure sensor and transmitter assembly.
How to fix Step by Step
Step 1: Diagnose the B1255 code
- Begin by connecting specialized diagnostic tools to the vehicle’s onboard computer system.
- Use the tools to retrieve the specific B1255 code and any other related error codes.
- Analyze the code and refer to the vehicle’s service manual or technical database for a detailed description of the issue.
Step 2: Inspect the tire pressure sensors
- Locate the tire pressure sensors, which are typically mounted on the wheel valve stems or integrated into the tire pressure monitoring system (TPMS) module.
- Visually inspect each sensor for any physical damage, such as cracks or breakage.
- Check for signs of corrosion or debris buildup on the sensors.
Step 3: Ensure proper installation and programming
- Verify that the tire pressure sensors are correctly installed on each tire.
- Consult the vehicle’s service manual or TPMS programming tool to ensure that the sensors are programmed and registered to the vehicle’s TPMS system.
- If necessary, reprogram or re-register the sensors according to the manufacturer’s instructions.
Step 4: Clean the tire pressure sensors
- Use a soft cloth or brush to gently clean each sensor, removing any dirt, grime, or debris.
- Pay attention to the sensor’s valve stem area and ensure it is free of any obstructions.
- If corrosion is present, use a specialized cleaner or a mixture of water and mild soap to clean the affected areas.
Step 5: Test the tire pressure sensors
- Inflate each tire to the recommended pressure level.
- Use a TPMS tool to activate the sensors and check for accurate readings.
- Verify that the sensor readings match the actual tire pressure displayed on the vehicle’s dashboard.
Step 6: Address any sensor failures or inaccuracies
- If a sensor is found to be faulty or providing inaccurate readings, it may need to be replaced.
- Consult the vehicle’s service manual or contact a professional technician for guidance on replacing the sensor.
- After replacing a sensor, follow the necessary steps for programming and registering it to the TPMS system.
Step 7: Perform regular tire pressure maintenance
- To prevent future tire pressure sensor issues, make it a habit to regularly check and maintain proper tire pressure.
- Use a reliable tire pressure gauge to measure and adjust the pressure as needed.
- Follow the vehicle manufacturer’s recommended tire pressure guidelines for optimal performance and safety.
Step 8: Keep sensors clean and free from debris
- Routinely inspect the tire pressure sensors for any signs of dirt, debris, or corrosion.
- Clean the sensors as necessary using a soft cloth or brush and the appropriate cleaning solution.
- Avoid using harsh chemicals or abrasive materials that could damage the sensors.
Step 9: Monitor sensor functionality
- Periodically check the tire pressure sensor readings using the vehicle’s TPMS system or a dedicated TPMS tool.
- If any abnormalities or inconsistencies are detected, address them promptly to maintain accurate tire pressure monitoring.
Step 10: Seek professional assistance if needed
- If you are unable to diagnose or resolve the B1255 code or any tire pressure sensor issues on your own, it is recommended to consult a professional technician.
- They have the expertise and specialized equipment to accurately diagnose and repair TPMS-related problems.
What are the Common Diagnosis Mistakes
One common mistake in diagnosing the B1255 code is not properly checking the wiring harness and connectors. This can cause important issues to be missed and the code to continue appearing. To avoid this mistake, it is important to thoroughly inspect the wiring harness and connectors for any signs of damage, such as wires that are frayed or connections that are loose.
Other common mistakes when diagnosing the B1255 code include incorrectly identifying the problem as a faulty left rear tire pressure sensor or transmitter assembly, when the actual issue is somewhere else. Additionally, not checking for reprogramming issues or failing to consult the factory service manuals for specific information can also lead to misdiagnosis.
To ensure an accurate diagnosis, it is crucial to carefully examine all possible causes and follow the correct diagnostic procedures.
What is the Repair Cost
The repair cost for the B1255 code can vary depending on factors like location, vehicle make and model, and engine type. On average, shops charge between $75 and $150 per hour for labor.
The specific repair cost will depend on the cause of the code, which can include reprogramming, replacing faulty components, or addressing issues with the body control module.
Regular maintenance and inspections can help prevent the B1255 code in the future.
Can I drive safely with this code?
Driving with the B1255 code can compromise safety. The code indicates an unprogrammed left rear tire pressure sensor, affecting the vehicle’s ability to monitor tire pressure accurately. This can impact handling, stability, and braking performance. Continuing to drive may increase the risk of blowouts, reduced traction, and decreased fuel efficiency.
It is essential to have the code diagnosed and repaired by a professional before driving again.
Wrapping Up
The B1255 code indicates a problem with the left rear tire pressure sensor and transmitter assembly. The code can be triggered by issues such as improper programming, a faulty sensor or transmitter assembly, or a faulty body control module.
It is important to have the code diagnosed by a professional and follow the recommended repair steps to ensure safe driving and proper functioning of the vehicle.