U155D Code - Body Control Module Lost Communication With Right Rear Seat Heating/Venting/Cooling Switch On LIN Bus
Quick Answer
The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Right Rear Seat Heating/Venting/Cooling Switch, Right Rear Seat Heating/Venting/Cooling Switch harness is open or shorted, Right Rear Seat Heating/Venting/Cooling Switch circuit poor electrical connection. 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
- U155D indicates Body Control Module Lost Communication With Right Rear Seat Heating/Venting/Cooling Switch On LIN Bus.
- Common causes
- Common causes include Faulty Right Rear Seat Heating/Venting/Cooling Switch, Right Rear Seat Heating/Venting/Cooling Switch harness is open or shorted, Right Rear Seat Heating/Venting/Cooling Switch circuit poor electrical connection.
- 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.
Code U155D Description
What are the Possible Causes of the DTC U155D?
- Faulty Right Rear Seat Heating/Venting/Cooling Switch
- Right Rear Seat Heating/Venting/Cooling Switch harness is open or shorted
- Right Rear Seat Heating/Venting/Cooling Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC U155D?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U155D code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- U155D Buick — Body Control Module Lost Communication With Right Rear Seat Heating/Venting/Cooling Switch On LIN Bus
- U155D Cadillac — Body Control Module Lost Communication With Right Rear Seat Heating/Venting/Cooling Switch On LIN Bus
- U155D Chevrolet — Body Control Module Lost Communication With Right Rear Seat Heating/Venting/Cooling Switch On LIN Bus
- U155D GMC — Body Control Module Lost Communication With Right Rear Seat Heating/Venting/Cooling Switch On LIN Bus
Frequently Asked Questions about U155D Code
1. What are common symptoms of OBDII code U155D?
- Common symptoms include malfunctioning right rear seat heating/cooling/venting controls, illuminated warning lights on the dashboard, and loss of communication with the right rear seat module.
2. What can cause the Body Control Module to lose communication with the right rear seat heating/cooling switch?
- The loss of communication can be caused by wiring issues, a faulty body control module, a malfunctioning right rear seat switch, or a problem with the LIN bus communication network.
3. How can I diagnose the U155D code related to the right rear seat controls?
- Diagnosing the U155D code involves using a diagnostic scanner to read the codes, checking the wiring connections for any damage or loose connections, and testing the right rear seat heating/cooling switch for proper functionality.
4. Can I still drive my vehicle with the U155D code present?
- It is generally safe to drive the vehicle with the U155D code, but it is advisable to have the issue diagnosed and repaired as soon as possible to avoid potential discomfort for passengers in the right rear seat.
5. Is it possible to reset the U155D code without repairs?
- Resetting the code without addressing the underlying issue may temporarily clear the code, but it is likely to reappear until the root cause of the communication loss is resolved.
6. How much does it typically cost to repair the U155D code related to the right rear seat controls?
- Repair costs can vary depending on the specific cause of the communication loss, but it may involve expenses for parts replacement, wiring repairs, or module reprogramming. It's recommended to consult a professional for an accurate estimate.
7. Are there any DIY repair tips for addressing the U155D code?
- DIY repair tips may include checking the wiring harness for visible damage, ensuring all connectors are securely plugged in, and using a multimeter to test for continuity in the wiring.
8. Can extreme weather conditions affect the occurrence of the U155D code?
- Extreme weather conditions can potentially exacerbate existing issues with the right rear seat heating/cooling system, leading to the triggering of the U155D code due to increased strain on the components.
9. How long does it typically take to repair the U155D code?
- The repair time for the U155D code can vary depending on the specific cause of the communication loss and the complexity of the repair process. It may range from a few hours to a full day in some cases.
10. Is the U155D code a common issue in certain vehicle models?
- The U155D code related to the body control module losing communication with the right rear seat controls can be more prevalent in vehicles equipped with advanced climate control systems and integrated seat functions.
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