AutoCodes – Buick – U1153 Buick

U1153 Buick Code - Lost Communication With Climate Control Panel

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Climate Control Panel, Climate Control Panel harness is open or shorted, Climate Control Panel 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: U1153 Buick indicates Lost Communication With Climate Control Panel.
Common causes: Common causes include Faulty Climate Control Panel, Climate Control Panel harness is open or shorted, Climate Control Panel 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 2,133

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 Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1153 Buick Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1153 is set.

OBDII Code U1153 Buick - Lost Communication With Climate Control Panel - AutoCodes.com — U1153 Buick Code - Lost Communication With Climate Control Panel

What does this mean?

What are the Possible Causes of the DTC U1153 Buick?

Faulty Climate Control Panel
Climate Control Panel harness is open or shorted
Climate Control Panel circuit poor electrical connection

How to Fix the DTC U1153 Buick?

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 U1153 Buick 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 U1153 Buick Code

What does the OBDII code U1153 mean for my Buick?

U1153 indicates a lost communication with the climate control panel, meaning the vehicle's computer is not able to receive data from the climate control module.

What are common symptoms of the U1153 code?

Common symptoms may include malfunctioning climate control settings, inoperative air conditioning or heating, and the climate control display not functioning properly.

What could cause the U1153 code to trigger?

Causes can include a faulty climate control panel, damaged wiring or connectors, a blown fuse, or issues with the vehicle's main computer.

Can I drive my Buick with the U1153 code?

While you can drive the vehicle, you may experience issues with climate control functions, and it's advisable to address the problem to ensure proper operation.

How can I diagnose the U1153 code?

You can start by using an OBDII scanner to confirm the code, then check the wiring and connectors related to the climate control panel, and inspect fuses associated with the climate control system.

What repairs might be needed to fix the U1153 code?

Repairs may include replacing the climate control panel, repairing or replacing damaged wiring or connectors, or replacing any blown fuses.

Is it necessary to clear the U1153 code after repairs?

Yes, after making repairs, you should clear the code using an OBDII scanner to reset the system and check if the issue has been resolved.

How can I prevent the U1153 code from recurring?

Regular maintenance, including checking wiring and connections for wear or corrosion, can help prevent communication issues with the climate control panel.

Could a software update fix the U1153 code?

Yes, in some cases, a software update from a dealership or qualified technician may resolve communication issues if they are related to programming errors.