U0122 Honda Code - F-CAN Malfunction Engine Control Module-Vehicle Stability Assist Modulator Control Unit
Quick Answer
The Controller Area Network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL). Common causes include Faulty Vehicle Stability Assist (VSA) Modulator Control Unit, Vehicle Stability Assist harness is open or shorted, Vehicle Stability Assist 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
- U0122 Honda indicates F-CAN Malfunction Engine Control Module-Vehicle Stability Assist Modulator Control Unit.
- Common causes
- Common causes include Faulty Vehicle Stability Assist (VSA) Modulator Control Unit, Vehicle Stability Assist harness is open or shorted, Vehicle Stability Assist 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 U0122 Honda Description
What are the Possible Causes of the DTC U0122 Honda?
- Faulty Vehicle Stability Assist (VSA) Modulator Control Unit
- Vehicle Stability Assist harness is open or shorted
- Vehicle Stability Assist circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC U0122 Honda?
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 U0122 Honda 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 U0122 Honda Code
1. What are common symptoms of OBDII code U0122 in a Honda vehicle?
- Common symptoms include the illumination of the check engine light, loss of communication with various control modules, issues with the vehicle stability control system, and potential drivability issues.
2. What does the OBDII code U0122 indicate in a Honda vehicle?
- The U0122 code indicates a malfunction in the communication network between the Engine Control Module (ECM) and the Vehicle Stability Assist Modulator Control Unit via the F-CAN (Fast Controller Area Network).
3. What are possible causes of the U0122 code in a Honda vehicle?
- Possible causes of the U0122 code include a faulty F-CAN communication line, defective Engine Control Module (ECM), issues with the Vehicle Stability Assist Modulator Control Unit, damaged wiring or connectors, or a software glitch.
4. How can I diagnose the U0122 code in my Honda vehicle?
- Diagnosis typically involves using an OBDII scanner to retrieve the code, checking for additional related codes, inspecting the wiring and connectors for damage, and performing communication tests between the ECM and the stability control unit.
5. Can I still drive my Honda with the U0122 code present?
- It is not recommended to drive the vehicle with the U0122 code present, as it can affect the proper operation of the engine and vehicle stability control systems, potentially compromising safety and performance.
6. How can the U0122 code be repaired in a Honda vehicle?
- Repairing the U0122 code may involve fixing any damaged wiring or connectors, replacing the faulty Engine Control Module (ECM) or Vehicle Stability Assist Modulator Control Unit, and ensuring proper communication between the modules.
7. Is it possible to reset the U0122 code in a Honda without fixing the underlying issue?
- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the U0122 code to prevent further problems with engine performance and vehicle stability.
8. Can a DIY enthusiast fix the U0122 code issue in a Honda?
- Depending on the root cause, DIY enthusiasts with advanced automotive repair skills and access to proper tools may be able to diagnose and repair the U0122 code. However, complex issues may require professional assistance.
9. How can I prevent the U0122 code from reoccurring in my Honda?
- Regular maintenance, timely repairs of any communication system faults, and avoiding electrical issues can help prevent the U0122 code from reoccurring in a Honda vehicle.
10. Is the U0122 code specific to Honda vehicles only?
- While the U0122 code is commonly associated with Honda vehicles, it can also appear in other vehicle makes and models that utilize similar communication network systems like the F-CAN.
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