U1159 Code - Lost Communication With Automatic Sway Bar System Module
Quick Answer
The U1159 diagnostic trouble code indicates that there is a communication problem with the Automatic Sway Bar System Module in the vehicle. Common causes include Faulty wiring connections, Malfunctioning Automatic Sway Bar System Module, Communication network issues within the vehicle. 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
- U1159 indicates Lost Communication With Automatic Sway Bar System Module.
- Common causes
- Common causes include Faulty wiring connections, Malfunctioning Automatic Sway Bar System Module, Communication network issues within the vehicle.
- 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 U1159 Description
The U1159 diagnostic trouble code indicates that there is a communication problem with the Automatic Sway Bar System Module in the vehicle. This module is responsible for controlling the vehicle's sway bar, which helps to stabilize the vehicle during turns and maneuvers. When communication is lost with this module, it can lead to issues with the vehicle's handling and stability.
Common Causes of U1159
- Faulty wiring connections
- Malfunctioning Automatic Sway Bar System Module
- Communication network issues within the vehicle
- Electrical system malfunctions
- Corrosion or damage to wiring harnesses
Symptoms of U1159
- Increased body roll during turns
- Unstable handling, especially at higher speeds
- Dashboard warning light indicating a communication error
- Difficulty controlling the vehicle during maneuvers
How to Fix U1159
- Begin by inspecting the wiring connections related to the Automatic Sway Bar System Module for any signs of damage, corrosion, or loose connections.
- Check the Automatic Sway Bar System Module itself for any visible signs of damage or malfunction. If necessary, replace the module with a new one.
- Use a diagnostic tool to reset the communication system and clear the U1159 code from the vehicle's system.
- Test drive the vehicle to ensure that the communication with the sway bar system module has been restored and that the symptoms associated with the code have been resolved.
Cost to Fix U1159
The cost of repairing a lost communication issue with the Automatic Sway Bar System Module can vary depending on the extent of the problem and the specific repair needed. In general, the cost of parts for this repair could range from $200 to $500, while labor costs could add another $100 to $200 to the total repair bill. Overall, the total cost for addressing this issue could range from $300 to $700, depending on the specific circumstances. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific repair shop. It's recommended to obtain quotes from local auto repair shops to get a more accurate cost estimate for this repair.
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Code U1159 Information for Specific Makes
- U1159 Chrysler — Lost Communication With Automatic Sway Bar System Module
- U1159 Dodge — Lost Communication With Automatic Sway Bar System Module
- U1159 Jeep — Lost Communication With Automatic Sway Bar System Module
- U1159 RAM — Lost Communication With Automatic Sway Bar System Module
Frequently Asked Questions about U1159 Code
What does the OBDII code U1159 mean?
U1159 indicates a loss of communication between the vehicle’s Automatic Sway Bar System Module and other control modules.
What are common symptoms of code U1159?
Symptoms may include a warning light on the dashboard, reduced suspension performance, or the sway bar system failing to engage/disengage properly.
What causes the U1159 code to appear?
Common causes include faulty wiring or connectors, a malfunctioning Automatic Sway Bar System Module, or problems with the vehicle’s CAN bus network.
Can I still drive my vehicle with code U1159?
While the vehicle may still be drivable, you may experience reduced handling or suspension performance. It’s best to address the issue promptly.
How can I diagnose the U1159 code?
Start by inspecting the wiring and connectors for damage, check for loose connections, and use a diagnostic scanner to verify communication between modules.
What repairs are commonly needed for code U1159?
Repairs may include fixing damaged wiring, replacing faulty connectors, or replacing the Automatic Sway Bar System Module if it’s defective.
Is the U1159 code specific to certain vehicle brands?
Yes, U1159 is more common in vehicles equipped with advanced sway bar systems, typically found in off-road or performance-oriented models.
How much does it cost to fix code U1159?
Repair costs vary depending on the issue, but replacing the sway bar module can range from $300 to $800, excluding labor.
Can a low battery cause the U1159 code?
Yes, a weak or failing battery can disrupt communication between modules and trigger this code.
Do I need to reprogram the sway bar module if replaced?
In most cases, yes. Reprogramming ensures the new module properly integrates with the vehicle’s communication network.
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