U1559 Code - Body Control Module Lost Communication With Short Range Remote Control Transceiver On LIN Bus
Quick Answer
The U1559 diagnostic trouble code (DTC) indicates that the Body Control Module (BCM) has lost communication with the Short Range Remote Control Transceiver on the Local Interconnect Network (LIN) bus. Common causes include Wiring or connection issues between BCM and remote control transceiver, Faulty BCM or remote control transceiver module, Software glitches in the modules causing communication breakdown. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1559 indicates Body Control Module Lost Communication With Short Range Remote Control Transceiver On LIN Bus.
- Common causes
- Common causes include Wiring or connection issues between BCM and remote control transceiver, Faulty BCM or remote control transceiver module, Software glitches in the modules causing communication breakdown.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code U1559 Description
The U1559 diagnostic trouble code (DTC) indicates that the Body Control Module (BCM) has lost communication with the Short Range Remote Control Transceiver on the Local Interconnect Network (LIN) bus. The LIN bus is a communication network used in modern vehicles to allow various modules and components to communicate with each other. In this case, the BCM, which is responsible for controlling various body functions such as lighting, door locks, and security systems, is unable to communicate with the remote control transceiver.
Common Causes of U1559
- Wiring or connection issues between BCM and remote control transceiver
- Faulty BCM or remote control transceiver module
- Software glitches in the modules causing communication breakdown
- Water damage or corrosion in the wiring or connectors
- Electrical interference from other components or aftermarket devices
Symptoms of U1559
- Keyless entry not working
- Alarm system malfunctions
- Difficulty starting the vehicle
- Inability to unlock or lock doors remotely
- Malfunctioning interior lights or other body control functions
How to Fix U1559
- Perform a thorough diagnostic scan to confirm the U1559 code and pinpoint the exact cause of the communication loss.
- Inspect the wiring and connections between the BCM and remote control transceiver for any damage, corrosion, or loose connections.
- Test the BCM and remote control transceiver modules for proper functionality and replace any faulty components as needed.
- Clear the DTC and reprogram the modules if necessary to restore communication on the LIN bus.
- Test the vehicle to ensure that the keyless entry, alarm system, and other body control functions are operating correctly after the repair.
Cost to Fix U1559
The typical repair costs for addressing the U1559 code can vary depending on the specific cause of the communication loss. In general, replacing a faulty BCM or remote control transceiver module can range from $200 to $500, including parts and labor. Additional costs may apply if wiring repairs or reprogramming of modules are needed. It's important to consult with a qualified mechanic or auto repair shop for an accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates and diagnostic fees can vary, so it's advisable to inquire about these costs upfront.
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Code U1559 Information for Specific Makes
- U1559 Buick — Body Control Module Lost Communication With Short Range Remote Control Transceiver On LIN Bus
- U1559 Cadillac — Body Control Module Lost Communication With Short Range Remote Control Transceiver On LIN Bus
- U1559 Chevrolet — Body Control Module Lost Communication With Short Range Remote Control Transceiver On LIN Bus
- U1559 GMC — Body Control Module Lost Communication With Short Range Remote Control Transceiver On LIN Bus
Frequently Asked Questions about U1559 Code
1. What are the common symptoms of OBDII code U1559?
- Common symptoms include issues with keyless entry systems, power door locks malfunctioning, and remote start not working.
2. What can cause the Body Control Module to lose communication with the Short Range Remote Control Transceiver on the LIN bus?
- Possible causes include damaged wiring, loose connections, a faulty transceiver module, or a malfunctioning Body Control Module.
3. How can I diagnose the cause of the communication loss between the Body Control Module and the Short Range Remote Control Transceiver?
- Diagnosis typically involves checking the wiring connections, inspecting for physical damage, testing the transceiver module, and using a diagnostic scanner to read the fault codes.
4. Can a DIYer repair the U1559 code related to the Body Control Module and Short Range Remote Control Transceiver communication issue?
- Depending on your experience and access to tools, DIYers may be able to address the issue by checking connections, replacing damaged wiring, or swapping out the transceiver module.
5. Is it safe to continue driving with the U1559 code present?
- It is generally safe to drive with this code, but it's recommended to address the issue promptly to restore the functionality of keyless entry systems and ensure proper operation of other related features.
6. How much does it typically cost to repair the U1559 code related to the Body Control Module and Short Range Remote Control Transceiver communication problem?
- The cost can vary depending on the exact cause of the issue, but repairs may range from $100 to $500 or more, including parts and labor.
7. Can resetting the Body Control Module help resolve the U1559 code?
- Resetting the Body Control Module may temporarily clear the code, but if the underlying issue such as a faulty connection or module is not addressed, the code is likely to reappear.
8. What role does the LIN bus play in the communication between the Body Control Module and the Short Range Remote Control Transceiver?
- The LIN bus is a communication network that allows various modules in a vehicle, like the Body Control Module and transceiver, to exchange data and signals for keyless entry and other functions.
9. Are there any troubleshooting tips for intermittent issues related to the U1559 code?
- If the problem is intermittent, inspecting the wiring harness for signs of wear, checking for loose connections, and monitoring the system when the issue occurs can help pinpoint the cause.
10. How long does it typically take to repair the U1559 code related to the Body Control Module and Short Range Remote Control Transceiver communication issue?
- Repair times can vary depending on the complexity of the problem and the availability of parts, but it may take anywhere from a few hours to a day for a professional technician to diagnose and fix the issue.
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