U0122 Code - Lost Communication with Vehicle Dynamics Control Module
Quick Answer
The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Vehicle Dynamics Control Module, Vehicle Dynamics Control Module harness is open or shorted. 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
- U0122 indicates Lost Communication with Vehicle Dynamics Control Module .
- Common causes
- Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Vehicle Dynamics Control Module, Vehicle Dynamics Control Module harness is open or shorted.
- 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 U0122 Description
What are the Possible Causes of the DTC U0122?
- Faulty Controller Area Network (CAN) Communication System
- Faulty Vehicle Dynamics Control Module
- Vehicle Dynamics Control Module harness is open or shorted
- Vehicle Dynamics Control Module circuit poor electrical connection
How to Fix the DTC U0122?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U0122 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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Information for Specific Makes
- U0122 Acura — F-CAN Malfunction Engine Control Module-Vehicle Stability Assist Modulator Control Unit
- U0122 Buick — Lost Communication With Vehicle Stability Control Module
- U0122 Cadillac — Lost Communication With Vehicle Stability Control Module
- U0122 Chevrolet — Lost Communication With Vehicle Stability Control Module
- U0122 Ford — Lost Communication With Vehicle Dynamics Control Module
- U0122 GMC — Lost Communication With Vehicle Stability Control Module
- U0122 Honda — F-CAN Malfunction Engine Control Module-Vehicle Stability Assist Modulator Control Unit
- U0122 Infiniti — Lost Communication With Vehicle Dynamics Control Module
- U0122 Lexus — Lost Communication with Vehicle Dynamics Control Module
- U0122 Lincoln — Lost Communication With Vehicle Dynamics Control Module
- U0122 Mercury — Lost Communication With Vehicle Dynamics Control Module
- U0122 Nissan — Lost Communication With Vehicle Dynamics Control Module
- U0122 Toyota — Lost Communication with Vehicle Dynamics Control Module
Frequently Asked Questions about U0122 Code
1. What are common symptoms of OBDII code U0122 (Lost Communication with Vehicle Dynamics Control Module)?
- Common symptoms include the traction control light being illuminated on the dashboard, difficulty controlling the vehicle's stability, and potential loss of traction control functionality.
2. What are possible causes of OBDII code U0122?
- Possible causes include a faulty vehicle dynamics control module, damaged wiring or connectors leading to the module, electrical interference, or a malfunction in the communication network.
3. How can I diagnose OBDII code U0122?
- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, checking for any additional related codes, inspecting the wiring and connectors for damage, and testing the vehicle dynamics control module for functionality.
4. Can OBDII code U0122 be fixed at home?
- While some DIY enthusiasts may attempt to address this code at home by checking for loose connections or damaged wiring, resolving communication issues with the vehicle dynamics control module often requires professional diagnostic tools and expertise.
5. Is it safe to drive with OBDII code U0122 present?
- It is generally not recommended to drive with this code present, as it can affect the vehicle's stability control system, potentially compromising safety on the road. It is best to address the issue promptly.
6. How much does it typically cost to repair OBDII code U0122?
- Repair costs can vary depending on the exact cause of the communication issue. Costs may include diagnostic fees, replacement of the vehicle dynamics control module, wiring repairs, and labor charges, potentially ranging from a few hundred to over a thousand dollars.
7. Can a faulty ABS system trigger OBDII code U0122?
- Yes, a malfunctioning Anti-lock Braking System (ABS) can sometimes trigger code U0122, as the ABS system is closely related to the vehicle dynamics control module and may share communication components.
8. Are there any temporary fixes for OBDII code U0122?
- Temporary fixes such as resetting the system by disconnecting the battery or clearing the code with an OBDII scanner may temporarily remove the warning lights, but the underlying communication issue will likely persist and should be addressed properly.
9. How long does it usually take to repair OBDII code U0122?
- The repair time for this code can vary depending on the exact cause and complexity of the issue. Repairs may range from a few hours to a full day, especially if diagnostics and parts replacement are involved.
10. Can a software update resolve OBDII code U0122?
- In some cases, a software update provided by the vehicle manufacturer may address communication issues leading to code U0122. Checking for any available updates through a dealership or authorized service center is recommended.
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