AutoCodes – Cadillac – U153A Cadillac

U153A Cadillac Code - Body Control Module Lost Communication With Passenger Window 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 Passenger Window Switch, Passenger Window Switch harness is open or shorted, Passenger Window 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: U153A Cadillac indicates Body Control Module Lost Communication With Passenger Window Switch On LIN Bus.
Common causes: Common causes include Faulty Passenger Window Switch, Passenger Window Switch harness is open or shorted, Passenger Window 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 665

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U153A 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 Body Control Module (BCM) from the Passenger Window Switch has not been received.

OBDII Code U153A Cadillac - Body Control Module Lost Communication With Passenger Window Switch On LIN Bus - AutoCodes.com — U153A Cadillac Code - Body Control Module Lost Communication With Passenger Window Switch On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U153A Cadillac?

Faulty Passenger Window Switch
Passenger Window Switch harness is open or shorted
Passenger Window Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC U153A 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 U153A 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 U153A Cadillac Code

What does OBDII code U153A mean for my Cadillac?

OBDII code U153A indicates that the Body Control Module (BCM) has lost communication with the passenger window switch on the Local Interconnect Network (LIN) bus.

What symptoms might I experience with code U153A?

Common symptoms include the passenger window not functioning, unresponsive controls, and potential issues with other electrical components in the vehicle.

What could cause the U153A code to appear?

Causes may include a faulty passenger window switch, damaged wiring or connectors, a malfunctioning Body Control Module, or communication issues within the LIN bus system.

How can I diagnose the issue related to code U153A?

You can start by checking the passenger window switch for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to monitor the LIN bus for communication errors.

What are some repair tips for code U153A?

Repair tips include replacing the faulty passenger window switch, repairing any damaged wiring or connectors, and reprogramming or replacing the BCM if necessary.

Can I clear the U153A code after repairs?

Yes, after addressing the underlying issue, you can clear the code using an OBDII scan tool. If the problem is resolved, the code should not return.

Is it safe to drive my Cadillac with code U153A?

While it may be safe to drive, the inoperable passenger window could pose a safety risk, especially if left open. It's best to address the issue promptly.

What should I do if the U153A code persists after repairs?

If the code persists, double-check all connections and wiring, and consider seeking professional diagnostic help to further investigate the BCM or LIN bus system.

Can a dead battery cause the U153A code?

Yes, a dead or weak battery can lead to communication issues between modules, potentially triggering the U153A code. Ensure the battery is fully charged and in good condition.