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U0168 Dodge Code - Lost Communication With Vehicle Security Control Module

Quick Answer

The U0168 diagnostic trouble code (DTC) for Dodge vehicles indicates that there is a communication problem between the vehicle's onboard computer system and the Vehicle Security Control Module (VSCM). Common causes include Faulty Vehicle Security Control Module (VSCM), Wiring issues or loose connections, Communication network problems between modules. 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 Dodge indicates Lost Communication With Vehicle Security Control Module.
Common causes
Common causes include Faulty Vehicle Security Control Module (VSCM), Wiring issues or loose connections, Communication network problems between modules.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code U0168 Dodge Description

The U0168 diagnostic trouble code (DTC) for Dodge vehicles indicates that there is a communication problem between the vehicle's onboard computer system and the Vehicle Security Control Module (VSCM). The VSCM is responsible for managing the security features of the vehicle, such as the anti-theft system and keyless entry. When communication with the VSCM is lost, it can lead to various issues related to vehicle security and potentially affect the overall performance of the vehicle.

OBDII Code U0168 Dodge - Lost Communication With Vehicle Security Control Module
U0168 Dodge Code - Lost Communication With Vehicle Security Control Module

Common Causes of U0168 Dodge

  1. Faulty Vehicle Security Control Module (VSCM)
  2. Wiring issues or loose connections
  3. Communication network problems between modules
  4. Malfunctioning onboard computer system
  5. Software glitches or programming errors

Symptoms of U0168 Dodge

  1. Inability to start the vehicle
  2. Malfunctioning keyless entry system
  3. Security system warning lights on the dashboard
  4. Remote start not working
  5. Issues with door locks or alarm system

How to Fix U0168 Dodge

  1. Diagnose the issue using a professional diagnostic tool to pinpoint the exact cause of the communication problem.
  2. Check the wiring and connections related to the VSCM to ensure they are secure and free of damage.
  3. Test the VSCM for faults and replace it if necessary.
  4. Verify the communication network between modules is functioning correctly and address any issues found.
  5. Clear the DTC and perform a system reset to ensure the problem is resolved.

Cost to Fix U0168 Dodge

The typical repair costs for addressing a U0168 code can vary depending on the specific cause of the communication problem. In general, replacing a faulty VSCM can cost anywhere from $200 to $600, including parts and labor. However, additional costs may be incurred if wiring repairs or module reprogramming are needed. It's important to note that 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 based on your vehicle make and model.

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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 U0168 Dodge Code

1. What are the common symptoms of OBDII code U0168 in a Dodge related to lost communication with the Vehicle Security Control Module?

- Common symptoms include issues with the vehicle's security system, such as the alarm not working properly, difficulty starting the vehicle, or warning lights related to the security system appearing on the dashboard.

2. What are the potential causes of OBDII code U0168 in a Dodge?

- The code U0168 typically indicates a communication problem between the vehicle's onboard computer systems and the Vehicle Security Control Module. Common causes include wiring issues, a faulty control module, or a software glitch.

3. How can I diagnose the root cause of OBDII code U0168 in my Dodge?

- To diagnose the issue, it is recommended to perform a thorough inspection of the wiring harness connected to the Vehicle Security Control Module, check for any loose connections, and use a diagnostic scanner to retrieve additional fault codes that may provide more information.

4. Is it safe to continue driving my Dodge with the U0168 code present?

- It is generally not recommended to drive the vehicle with the U0168 code present, as it indicates a potential issue with the security system that could affect the vehicle's operation or safety. It is best to address the problem promptly.

5. Can I repair the U0168 code issue in my Dodge myself?

- While some DIY enthusiasts may attempt to diagnose and repair the U0168 code themselves, it is recommended to seek assistance from a qualified mechanic or dealership with experience in diagnosing and repairing communication issues with the Vehicle Security Control Module.

6. How much does it typically cost to repair the U0168 code in a Dodge?

- The cost of repairing the U0168 code can vary depending on the root cause of the communication issue. Costs may include parts replacement, labor fees, and diagnostic charges. It is best to obtain a quote from a professional technician.

7. Are there any temporary fixes or workarounds for the U0168 code in a Dodge?

- Temporary fixes or workarounds for the U0168 code are not recommended, as they may not address the underlying issue with the communication system. It is best to properly diagnose and repair the problem to ensure the vehicle's security system functions correctly.

8. Can the U0168 code in a Dodge cause other problems if left unrepaired?

- Leaving the U0168 code unrepaired can potentially lead to further issues with the vehicle's security system, affecting its operation and possibly causing inconvenience or safety concerns. It is advisable to address the problem promptly.

9. How long does it typically take to repair the U0168 code in a Dodge?

- The repair time for the U0168 code can vary depending on the complexity of the issue and the availability of parts. In some cases, the repair may be completed within a few hours, while more intricate problems may require more time.

10. Is the U0168 code specific to Dodge vehicles, or can it occur in other makes and models?

- The U0168 code related to lost communication with the Vehicle Security Control Module is not exclusive to Dodge vehicles and can occur in other makes and models that are equipped with similar security control modules.

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