U1186 Code - Lost Communication With Adaptive Cruise Control Module
Quick Answer
The U1186 code indicates that there is a communication problem between the vehicle's onboard computer system and the Adaptive Cruise Control Module. Common causes include Faulty wiring or connections related to the ACC module, Damaged Adaptive Cruise Control Module, Software glitches in the vehicle's computer system. 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
- U1186 indicates Lost Communication With Adaptive Cruise Control Module.
- Common causes
- Common causes include Faulty wiring or connections related to the ACC module, Damaged Adaptive Cruise Control Module, Software glitches in the vehicle's computer system.
- 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 U1186 Description
The U1186 code indicates that there is a communication problem between the vehicle's onboard computer system and the Adaptive Cruise Control Module. The Adaptive Cruise Control (ACC) system is responsible for automatically adjusting the vehicle's speed to maintain a safe following distance from the vehicle ahead. When communication is lost with this module, it can affect the performance of the ACC system, leading to potential safety issues on the road.
Common Causes of U1186
- Faulty wiring or connections related to the ACC module
- Damaged Adaptive Cruise Control Module
- Software glitches in the vehicle's computer system
- Poor connection between components in the ACC system
- Electrical interference or malfunctions in the vehicle's communication network
Symptoms of U1186
- ACC system not engaging or maintaining speed properly
- Warning light on the dashboard related to the ACC system
- Inability to set or adjust following distance
- Erratic behavior of the vehicle's speed control
- Other related safety systems may be disabled or malfunctioning
How to Fix U1186
- Perform a thorough diagnostic scan to identify the specific cause of the communication failure
- Inspect wiring and connections related to the ACC module for any damage or loose connections
- Test the ACC module for functionality and replace if necessary
- Clear the diagnostic trouble codes and reset the system
- Test drive the vehicle to ensure the ACC system is functioning properly after repairs
Cost to Fix U1186
The cost of repairing the U1186 code can vary depending on the specific cause of the communication failure. In general, the repair costs for this issue may range from $200 to $600, including parts and labor. It's important to note that the actual cost could be higher if the ACC module needs replacement, as this component can be expensive. Additionally, diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Code U1186 Information for Specific Makes
- U1186 Chrysler — Lost Communication With Adaptive Cruise Control Module
- U1186 Dodge — Lost Communication With Adaptive Cruise Control Module
- U1186 Jeep — Lost Communication With Adaptive Cruise Control Module
- U1186 RAM — Lost Communication With Adaptive Cruise Control Module
Frequently Asked Questions about U1186 Code
1. What are the common symptoms of OBDII code U1186 - Lost Communication With Adaptive Cruise Control Module?
- Common symptoms include the adaptive cruise control system not working properly, the cruise control light on the dashboard illuminating, and potential issues with the vehicle's speed control.
2. What are the possible causes of OBDII code U1186?
- Possible causes include a faulty adaptive cruise control module, wiring or connection issues, a software glitch, or a problem with the vehicle's main computer system.
3. How can I diagnose the cause of OBDII code U1186?
- Diagnosing the issue typically involves using a diagnostic scanner to retrieve the specific trouble codes, checking the wiring and connections related to the adaptive cruise control module, and performing a thorough inspection of the module itself.
4. Can I still drive my vehicle with OBDII code U1186 present?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue as soon as possible to prevent any potential safety hazards or further damage to the system.
5. How can I repair OBDII code U1186 - Lost Communication With Adaptive Cruise Control Module?
- The repair process may involve repairing or replacing damaged wiring, checking and resetting the adaptive cruise control module, updating software if necessary, or seeking professional help for more complex issues.
6. Will resetting the trouble code make it go away permanently?
- Resetting the trouble code may temporarily clear the warning light, but if the underlying issue causing the code is not fixed, the code is likely to reappear after driving the vehicle for a period of time.
7. Is OBDII code U1186 a common issue in certain vehicle makes or models?
- This code can be more common in vehicles equipped with adaptive cruise control systems, particularly in newer models with advanced safety features.
8. Can a DIY enthusiast easily fix OBDII code U1186 at home?
- Some simple causes like loose connections or minor wiring issues may be fixable by a DIY enthusiast with the right tools and knowledge, but more complex problems may require professional assistance.
9. Are there any recalls related to OBDII code U1186?
- It's recommended to check with the vehicle manufacturer or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to this specific OBDII code and associated components.
10. How can I prevent OBDII code U1186 from occurring in the future?
- Regularly inspecting and maintaining the adaptive cruise control system, ensuring proper connections and wiring, and following the manufacturer's recommended maintenance schedule can help prevent this code from occurring.
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