AutoCodes – Cadillac – U1528 Cadillac

U1528 Cadillac Code - Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Adjuster 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 Driver/Passenger Seat Adjuster Switch, Driver/Passenger Seat Adjuster Switch harness is open or shorted, Driver/Passenger Seat Adjuster 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: U1528 Cadillac indicates Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Adjuster Switch On LIN Bus.
Common causes: Common causes include Faulty Driver/Passenger Seat Adjuster Switch, Driver/Passenger Seat Adjuster Switch harness is open or shorted, Driver/Passenger Seat Adjuster 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.

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Code Popularity 1,053

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1528 Cadillac Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Driver/Passenger Seat Memory Control Module from the Driver/Passenger Seat Adjuster Switch has not been received.

OBDII Code U1528 Cadillac - Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Adjuster Switch On LIN Bus - AutoCodes.com — U1528 Cadillac Code - Driver/Passenger Seat Memory Control Module Lost Communication With Driver/Passenger Seat Adjuster Switch On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U1528 Cadillac?

Faulty Driver/Passenger Seat Adjuster Switch
Driver/Passenger Seat Adjuster Switch harness is open or shorted
Driver/Passenger Seat Adjuster Switch circuit poor electrical connection
Faulty Driver/Passenger Seat Memory Control Module

How to Fix the DTC U1528 Cadillac?

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 U1528 Cadillac 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U1528 Cadillac Code

1. What are the common symptoms of OBDII code U1528 in a Cadillac?

- Common symptoms include the inability to adjust the driver or passenger seats using the seat memory functions, malfunctioning seat adjustments, and warning lights on the dashboard.

2. What does the OBDII code U1528 Cadillac indicate?

- The code U1528 indicates that the Driver/Passenger Seat Memory Control Module has lost communication with the Driver/Passenger Seat Adjuster Switch on the LIN Bus.

3. What are some possible causes of OBDII code U1528 in a Cadillac?

- Possible causes include a faulty Driver/Passenger Seat Memory Control Module, a defective Driver/Passenger Seat Adjuster Switch, damaged wiring or connectors, or communication issues on the LIN Bus network.

4. How can I diagnose the issue related to OBDII code U1528 in my Cadillac?

- Diagnosing the issue may involve using an OBDII scanner to retrieve the specific code, checking for loose or damaged wiring connections, testing the Driver/Passenger Seat Adjuster Switch, and inspecting the Seat Memory Control Module for faults.

5. Can I continue to drive my Cadillac with the U1528 code?

- It is not recommended to continue driving with the U1528 code present, as it indicates a communication issue between critical components of the seat adjustment system, which could potentially affect safety and comfort.

6. How can I repair OBDII code U1528 in my Cadillac?

- Repairing the issue may involve replacing the faulty Driver/Passenger Seat Memory Control Module or Seat Adjuster Switch, repairing damaged wiring or connectors, and ensuring proper communication on the LIN Bus network.

7. Is it possible to reset the U1528 code in a Cadillac without repairs?

- While you may be able to clear the code temporarily by resetting the vehicle's computer, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. Are there any recalls or technical service bulletins related to OBDII code U1528 in Cadillac vehicles?

- It's recommended to check with your local Cadillac dealership or online resources for any recalls or technical service bulletins related to the U1528 code to see if there are known issues or remedies available.

9. Can a DIY enthusiast fix the U1528 code issue in a Cadillac?

- Depending on your level of automotive knowledge and experience, you may be able to diagnose and repair the U1528 code issue yourself by following repair guides, but it's advisable to seek professional help if needed.

10. How can I prevent OBDII code U1528 from occurring in the future?

- To prevent the U1528 code from occurring again, it's essential to perform regular maintenance checks on the seat adjustment system, address any warning signs promptly, and ensure proper electrical connections and communication within the system.