U1204 Acura Code - IMA-CAN Malfunction
Quick Answer
The Integrated Motor Assist (IMA) - Controller Area Network (CAN) uses two signal lines, IMACANH and IMACANL, and it receives and transmits multiple signals simultaneously to/from multiple control modules. Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain 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
- U1204 Acura indicates IMA-CAN Malfunction.
- Common causes
- Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain 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 U1204 Acura Description
When the information is not sent from the Powertrain Control Module (PCM) through the IMA-CAN and this condition continues for a specified time or when the information sent from the PCM is abnormal and this condition continues for a specified cycle, the Battery Condition Monitor (BCM) module detects a malfunction and when BUS-OFF is not detected after the time to detect BUS-OFF has passed, a DTC is stored.
What are the Possible Causes of the DTC U1204 Acura?
- Faulty Powertrain Control Module (PCM)
- Powertrain Control Module harness is open or shorted
- Powertrain Control Module circuit poor electrical connection
- Faulty Battery Condition Monitor (BCM) Module)
- Faulty Motor Control Module (MCM)
How to Fix the DTC U1204 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.
Code Tech Notes
DTC U1204 (95): IMA-CAN Malfunction (Powertrain Control Module (PCM)- Motor Control Module (MCM))
DTC U1204 (55): IMA-CAN Malfunction (PCM-BCM Module)
DTC U1204 (95): IMA-CAN Malfunction (PCM-MCM)
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1204 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 U1204 Acura Code
1. What are common symptoms of OBDII code U1204 Acura (IMA-CAN Malfunction)?
The common symptoms of U1204 Acura code include the IMA (Integrated Motor Assist) system not working properly, reduced fuel efficiency, and potential drivability issues.
2. What can cause the U1204 Acura code to appear?
The U1204 code in Acura vehicles usually indicates a malfunction in the Communication Area Network (CAN) related to the IMA system. Possible causes include wiring issues, faulty IMA components, or a problem with the CAN communication itself.
3. How can I diagnose the U1204 Acura code?
Diagnosing the U1204 code typically involves using a scan tool to retrieve the specific fault code, checking the IMA system components for any visible damage, inspecting the wiring connections for looseness or corrosion, and testing the CAN communication network for faults.
4. How serious is the U1204 Acura code?
The U1204 code related to IMA-CAN malfunction should be addressed promptly as it can impact the performance and efficiency of the IMA system in your Acura vehicle. Ignoring the issue may lead to further damage or drivability problems.
5. Can I drive my Acura with the U1204 code?
It is not recommended to drive your Acura with the U1204 code present, as it indicates a malfunction in the IMA-CAN communication network. Continued driving may worsen the issue or lead to other problems with the IMA system.
6. How can I repair the U1204 Acura code?
Repairing the U1204 Acura code may involve repairing or replacing damaged wiring, addressing faulty IMA components, resetting the fault code, and ensuring proper communication within the CAN network. It is advisable to consult a professional mechanic for accurate diagnosis and repair.
7. Is the U1204 Acura code covered under warranty?
The coverage of the U1204 Acura code under warranty may vary based on the vehicle's warranty status, age, and mileage. It is recommended to check with your Acura dealership or refer to your vehicle's warranty documentation for specific details.
8. Can a DIY enthusiast fix the U1204 Acura code?
While some DIY enthusiasts may have the skills to diagnose and repair the U1204 code, dealing with complex IMA-CAN communication issues may require specialized tools and expertise. It is advisable to seek professional help to ensure proper diagnosis and repair.
9. Will resetting the U1204 code make it go away permanently?
Resetting the U1204 code may clear it temporarily, but if the underlying issue causing the IMA-CAN malfunction is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem to prevent future occurrences.
10. How much does it cost to repair the U1204 Acura code?
The cost of repairing the U1204 Acura code can vary depending on the specific cause of the issue, the required parts, and labor costs. It is recommended to obtain quotes from reputable mechanics or Acura service centers for an accurate estimate.
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