U1520 Code - Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Bolster Memory Control Module 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 Driver/Passenger Seat Bolster Memory Control Module, Driver/Passenger Seat Bolster Memory Control Module harness is open or shorted, Driver/Passenger Seat Bolster Memory Control Module 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
- U1520 indicates Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Bolster Memory Control Module On LIN Bus.
- Common causes
- Common causes include Faulty Driver/Passenger Seat Bolster Memory Control Module, Driver/Passenger Seat Bolster Memory Control Module harness is open or shorted, Driver/Passenger Seat Bolster Memory Control Module 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 U1520 Description
What are the Possible Causes of the DTC U1520?
- Faulty Driver/Passenger Seat Bolster Memory Control Module
- Driver/Passenger Seat Bolster Memory Control Module harness is open or shorted
- Driver/Passenger Seat Bolster Memory Control Module circuit poor electrical connection
- Faulty Driver/Passenger Seat Memory Control Module
How to Fix the DTC U1520?
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 U1520 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
- U1520 Buick — Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Bolster Memory Control Module On LIN Bus
- U1520 Cadillac — Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Bolster Memory Control Module On LIN Bus
- U1520 Chevrolet — Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Bolster Memory Control Module On LIN Bus
- U1520 GMC — Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Bolster Memory Control Module On LIN Bus
Frequently Asked Questions about U1520 Code
1. What are the common symptoms of OBDII code U1520?
- Common symptoms include malfunctioning seat memory settings, failure of seat adjustments, and warning lights on the dashboard.
2. What could cause the U1520 code to appear?
- The code may appear due to a communication loss between the driver/passenger seat memory control module and the seat bolster memory control module on the LIN bus.
3. How can I diagnose the U1520 code?
- Diagnosing the U1520 code involves using a diagnostic scanner to retrieve the code, checking the connections between modules, and testing the LIN bus communication.
4. Are there any repair tips for fixing the U1520 code?
- Repair tips include inspecting and repairing damaged wiring, ensuring proper module connections, and reprogramming or replacing faulty modules if necessary.
5. Can the U1520 code be fixed without professional help?
- Some basic troubleshooting steps, such as checking connections and fuses, can be done by DIY enthusiasts. However, complex repairs may require professional diagnosis and assistance.
6. Is it safe to drive with the U1520 code present?
- It is generally safe to drive with the U1520 code, but it is important to address the underlying issue promptly to prevent further problems with the seat controls.
7. How much does it typically cost to repair the U1520 code?
- The cost of repairing the U1520 code can vary depending on the extent of the issue, the need for replacement parts, and labor costs. It is recommended to get a few quotes from different mechanics.
8. Can resetting the vehicle's computer clear the U1520 code?
- Resetting the vehicle's computer may temporarily clear the code, but it will likely reappear if the underlying issue with the seat memory control modules is not resolved.
9. Are there any recalls related to the U1520 code?
- It is advisable to check with the vehicle manufacturer or a dealership to see if there are any recalls related to the U1520 code for your specific vehicle make and model.
10. What other functions could be affected by the U1520 code?
- In addition to the seat memory control modules, other related functions like heating/cooling features, lumbar support, and seat adjustments may also be affected by the U1520 code.
Discuss the causes and fixes for U1520 OBDII Code
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