AutoCodes – Cadillac – U1176 Cadillac

U1176 Cadillac Code - Loss Of Remote Function Actuator Communications

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Remote Function Actuator (RFA), Remote Function Actuator harness is open or shorted, Remote Function Actuator 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: U1176 Cadillac indicates Loss Of Remote Function Actuator Communications.
Common causes: Common causes include Faulty Remote Function Actuator (RFA), Remote Function Actuator harness is open or shorted, Remote Function Actuator 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 751

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 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U1176 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) U1176 is set.

OBDII Code U1176 Cadillac - Loss Of Remote Function Actuator Communications - AutoCodes.com — U1176 Cadillac Code - Loss Of Remote Function Actuator Communications

What does this mean?

What are the Possible Causes of the DTC U1176 Cadillac?

Faulty Remote Function Actuator (RFA)
Remote Function Actuator harness is open or shorted
Remote Function Actuator circuit poor electrical connection

How to Fix the DTC U1176 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 U1176 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.

Need more information about the U1176 Cadillac code?

Need more information on how to fix the U1176 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1176 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 U1176 Cadillac Code

1. What are common symptoms of OBDII code U1176 in a Cadillac related to Loss Of Remote Function Actuator Communications?

- Common symptoms include issues with remote keyless entry, power door locks, and other remote functions not working properly.

2. What are some possible causes of OBDII code U1176 in a Cadillac?

- Possible causes include a faulty remote keyless entry receiver, damaged wiring or connectors, or a communication failure within the vehicle's network.

3. How can I diagnose the issue causing OBDII code U1176 in my Cadillac?

- Diagnosing the issue typically involves checking the remote keyless entry system, inspecting wiring and connectors for damage, and using a diagnostic scan tool to identify communication faults.

4. Can a DIY enthusiast repair OBDII code U1176 in a Cadillac related to Loss Of Remote Function Actuator Communications?

- DIY repairs may be possible, depending on the underlying cause. Checking and repairing wiring, replacing faulty components, and resetting the system can sometimes resolve the issue.

5. What are the recommended steps to repair OBDII code U1176 in a Cadillac?

- Recommended steps include checking for loose connections, testing the remote keyless entry system, inspecting wiring for damage, and resetting the system if needed.

6. Is it necessary to visit a dealership or mechanic to fix OBDII code U1176 in a Cadillac?

- In some cases, visiting a dealership or mechanic with experience in Cadillac vehicles may be necessary, especially if the issue requires advanced diagnostic tools or expertise.

7. Can OBDII code U1176 in a Cadillac cause other problems besides loss of remote function actuator communications?

- While the primary issue is related to remote function actuator communications, unresolved communication faults within the vehicle's network can potentially cause other electrical system malfunctions.

8. How can I prevent OBDII code U1176 from recurring in my Cadillac?

- Regularly checking and maintaining the remote keyless entry system, ensuring wiring and connectors are in good condition, and addressing any communication issues promptly can help prevent the code from recurring.

9. Are there any software updates or recalls related to OBDII code U1176 in Cadillac vehicles?

- It's recommended to check with a Cadillac dealership or the manufacturer's website for any software updates or recalls related to communication issues, including code U1176.

10. Will fixing OBDII code U1176 in a Cadillac affect the vehicle's overall performance?

- Resolving code U1176 should restore proper functionality to the remote keyless entry system and related components, but it may not directly impact the vehicle's overall performance.