AutoCodes – Cadillac – U1153 Cadillac

U1153 Cadillac 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 Cadillac 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 1,429

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

What does this mean?

What are the Possible Causes of the DTC U1153 Cadillac?

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 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 U1153 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 U1153 Cadillac Code

1. What are common symptoms of OBDII code U1153 in a Cadillac related to lost communication with the climate control panel?

- Common symptoms include the climate control panel not responding, incorrect temperature readings, and issues with climate control functions.

2. What are some potential causes of OBDII code U1153 in a Cadillac indicating lost communication with the climate control panel?

- Causes may include a faulty climate control panel, wiring issues, a defective climate control module, or a communication network problem.

3. How can I diagnose the issue causing OBDII code U1153 in my Cadillac related to lost communication with the climate control panel?

- Diagnose the issue by checking the climate control panel for power and ground, inspecting wiring connections, scanning for other related trouble codes, and performing a network communication test.

4. Can a DIY enthusiast repair OBDII code U1153 in a Cadillac associated with lost communication with the climate control panel?

- Depending on the specific cause, DIY repairs may be possible, such as checking and repairing wiring connections or replacing a faulty climate control panel. However, complex network or module issues may require professional assistance.

5. Is it safe to continue driving with OBDII code U1153 in a Cadillac indicating lost communication with the climate control panel?

- It is generally not recommended to drive with this code present, as it can lead to issues with climate control functionality and potentially affect other vehicle systems. Prompt diagnosis and repair are advised.

6. How much can I expect to pay to repair OBDII code U1153 in a Cadillac related to lost communication with the climate control panel?

- Repair costs can vary depending on the specific cause of the issue. Simple fixes like wiring repairs may cost less, while replacing a climate control module or panel can be more expensive. It's advisable to obtain quotes from a trusted mechanic.

7. Are there any preventive measures to avoid encountering OBDII code U1153 in a Cadillac due to lost communication with the climate control panel?

- Regularly inspecting and maintaining the climate control system, ensuring proper wiring connections, and addressing any issues promptly can help prevent this code from occurring.

8. Can extreme temperatures or weather conditions contribute to triggering OBDII code U1153 in a Cadillac related to lost communication with the climate control panel?

- Extreme temperatures or weather conditions can potentially impact the climate control system, leading to communication issues. It's essential to keep the system well-maintained to minimize the risk.

9. Will resetting the OBDII system clear the U1153 code in a Cadillac caused by lost communication with the climate control panel?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, it is likely to reappear. It is recommended to diagnose and fix the root cause of the problem.

10. How long does it typically take to repair OBDII code U1153 in a Cadillac associated with lost communication with the climate control panel?

- The repair time can vary based on the cause of the issue and the complexity of the repair. Simple fixes may be completed quickly, while more involved repairs could take several hours or even days.