U0168 Buick Code - Lost Communication With Keyless Entry Control Module
Quick Answer
Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Keyless Entry Control Module, Keyless Entry Control Module harness is open or shorted, Keyless Entry Control Module 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
- U0168 Buick indicates Lost Communication With Keyless Entry Control Module.
- Common causes
- Common causes include Faulty Keyless Entry Control Module, Keyless Entry Control Module harness is open or shorted, Keyless Entry Control Module 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.
Code U0168 Buick Description
What are the Possible Causes of the DTC U0168 Buick?
- Faulty Keyless Entry Control Module
- Keyless Entry Control Module harness is open or shorted
- Keyless Entry Control Module circuit poor electrical connection
How to Fix the DTC U0168 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 U0168 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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Frequently Asked Questions about U0168 Buick Code
1. What are the common symptoms of OBDII code U0168 in a Buick related to lost communication with the keyless entry control module?
- Common symptoms include key fob not working, inability to remotely lock or unlock doors, and issues with the vehicle's anti-theft system.
2. What are the possible causes of OBDII code U0168 in a Buick?
- The code U0168 in a Buick typically indicates a communication error between the keyless entry control module and the vehicle's main computer. This can be caused by a faulty key fob, wiring issues, a defective control module, or a software glitch.
3. How can I diagnose the cause of OBDII code U0168 in my Buick?
- To diagnose the issue, you can start by checking the key fob battery, ensuring the key fob is functioning properly, inspecting the wiring connections, and using a diagnostic scanner to pinpoint the exact source of the communication problem.
4. Is it safe to continue driving my Buick with OBDII code U0168 related to lost communication with the keyless entry control module?
- While the vehicle may still be drivable, it's best to address the issue promptly to avoid potential inconvenience or security concerns related to the keyless entry system not functioning properly.
5. Can I repair OBDII code U0168 in my Buick myself?
- Depending on the cause of the communication error, repairs may range from replacing the key fob battery to repairing wiring or replacing the keyless entry control module. Simple fixes like battery replacement can be done by the owner, while more complex issues may require professional assistance.
6. Will resetting the OBDII code U0168 in my Buick resolve the communication problem with the keyless entry control module?
- Resetting the code may temporarily clear the error message, but if the underlying issue causing the communication problem persists, the code is likely to reappear. It's important to diagnose and address the root cause of the problem for a lasting solution.
7. How much does it typically cost to repair OBDII code U0168 in a Buick?
- The cost of repairing OBDII code U0168 can vary depending on the specific cause of the communication error. Simple fixes like replacing a key fob battery may cost less, while more involved repairs like replacing the control module can be more expensive.
8. Can a faulty keyless entry control module cause other issues besides triggering OBDII code U0168 in a Buick?
- Yes, a faulty keyless entry control module can cause other issues such as intermittent door locking/unlocking problems, malfunctioning alarm systems, and issues with remote start functionality.
9. Is it possible to bypass the keyless entry system in my Buick if I'm unable to repair OBDII code U0168?
- Bypassing the keyless entry system is not recommended as it can compromise the security and convenience features of your vehicle. It's best to address the underlying issue causing the communication error for proper functionality.
10. Can extreme weather conditions affect the keyless entry control module in a Buick and trigger OBDII code U0168?
- Extreme temperatures or moisture exposure can potentially impact the performance of the keyless entry control module and lead to communication errors. Keeping the key fob and control module dry and protected can help prevent such issues.
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