U129D Acura Code - Lost Communication With The Precision All Wheel Steer Control Unit
Quick Answer
The Controller Area Network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (F-CAN_H and F-CAN_L). Common causes include Faulty Precision All-Wheel Steer Control Unit, Precision All-Wheel Steer Control Unit harness is open or shorted, Precision All-Wheel Steer Control Unit 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
- U129D Acura indicates Lost Communication With The Precision All Wheel Steer Control Unit.
- Common causes
- Common causes include Faulty Precision All-Wheel Steer Control Unit, Precision All-Wheel Steer Control Unit harness is open or shorted, Precision All-Wheel Steer Control Unit 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 U129D Acura Description
What are the Possible Causes of the DTC U129D Acura?
- Faulty Precision All-Wheel Steer Control Unit
- Precision All-Wheel Steer Control Unit harness is open or shorted
- Precision All-Wheel Steer Control Unit circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC U129D Acura?
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 U129D Acura 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 U129D Acura Code
1. What are common symptoms of OBDII code U129D in an Acura related to the Precision All Wheel Steer Control Unit?
- Common symptoms include loss of communication with the Precision All Wheel Steer Control Unit, malfunction indicator light (MIL) illumination, and potential issues with the vehicle's steering system.
2. What are some possible causes of the U129D code in an Acura?
- Possible causes include damaged wiring or connectors, a faulty Precision All Wheel Steer Control Unit, software issues, or a communication bus problem within the vehicle's network.
3. How can I diagnose the U129D code in my Acura?
- Diagnosing the U129D code typically involves using a diagnostic scanner to retrieve the code, checking the wiring and connectors for any damage, and testing the Precision All Wheel Steer Control Unit for proper functionality.
4. Can I still drive my Acura if the U129D code is present?
- It is not recommended to drive your Acura if the U129D code related to the Precision All Wheel Steer Control Unit is present, as it can affect the vehicle's steering performance and safety.
5. How can I repair the U129D code in my Acura?
- Repairing the U129D code may involve repairing or replacing damaged wiring or connectors, replacing the Precision All Wheel Steer Control Unit if faulty, updating software, or addressing any communication bus issues in the vehicle.
6. Will resetting the trouble codes make the U129D code disappear?
- Resetting the trouble codes may temporarily clear the U129D code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the problem is detected again.
7. Is it necessary to visit a dealership for the U129D diagnostic and repair?
- While visiting a dealership with specialized knowledge and equipment for Acura vehicles is recommended, independent automotive repair shops with experience in diagnosing and repairing OBDII codes can also address the U129D code.
8. Can the U129D code be a false alarm in my Acura?
- While rare, false alarms for the U129D code can occur due to temporary communication glitches. However, it is important to thoroughly diagnose the issue to ensure the proper functioning of the Precision All Wheel Steer Control Unit.
9. Are there any maintenance tips to prevent the U129D code from appearing in my Acura?
- Regularly inspecting the wiring and connectors related to the Precision All Wheel Steer Control Unit, following the manufacturer's recommended maintenance schedule, and addressing any steering system issues promptly can help prevent the U129D code from appearing.
10. Can the U129D code be related to other systems in my Acura besides the Precision All Wheel Steer Control Unit?
- The U129D code specifically relates to a "Lost Communication With The Precision All Wheel Steer Control Unit" error, indicating a problem with this particular system. However, it is essential to address any related issues in the vehicle's network to prevent further complications.
Discuss the causes and fixes for U129D Acura OBDII Code
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El código U129D en tu Acura indica que el módulo de control de la Dirección en las Cuatro Ruedas de Precisión (P-AWS) ha perdido comunicación con otros módulos del vehículo. Esto puede estar causando que el sistema entre en modo seguro, limitando la velocidad máxima a 50 mph.
Posibles causas del problema:
- Problema en el módulo P-AWS – Puede estar fallando o haber perdido la conexión con la ECU principal.
- Fusibles o relés quemados – Revisa los fusibles y relés relacionados con la dirección trasera y el sistema de control P-AWS.
- Cableado o conectores sueltos o dañados – Verifica las conexiones y cables entre el módulo P-AWS y la ECU principal.
- Batería débil o fluctuaciones de voltaje – Un bajo voltaje puede causar pérdida de comunicación entre módulos.
- Reprogramación de la ECU necesaria – Algunos modelos pueden requerir una actualización de software si hay un problema conocido con el sistema.
¿Qué puedes hacer?
✅ Escanea el auto con un escáner avanzado para ver si hay más códigos de error relacionados.
✅ Verifica fusibles y conexiones del módulo P-AWS, asegurándote de que no haya cables dañados.
✅ Prueba la batería y alternador para asegurarte de que el voltaje sea estable.
✅ Si todo se ve bien, intenta desconectar la batería por 10-15 minutos y vuelve a probar.
✅ Si el problema sigue, puede ser necesario llevarlo a un taller o concesionario para revisar la comunicación del módulo P-AWS.Si el código sigue apareciendo después de revisar estas cosas, lo mejor sería una revisión con un escáner especializado para ver si el módulo necesita ser reemplazado o reprogramado.
¡Déjanos saber qué encuentras y te seguimos ayudando! 🚗🔧
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