U1898 GMC Code - Starter/Generator Control Module Lost Communication With Hybrid Control Module
Quick Answer
Modules connected to the class 2 and high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid Control Module (HCM), Hybrid Control Module harness is open or shorted, Hybrid 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
- U1898 GMC indicates Starter/Generator Control Module Lost Communication With Hybrid Control Module.
- Common causes
- Common causes include Faulty Hybrid Control Module (HCM), Hybrid Control Module harness is open or shorted, Hybrid 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 U1898 GMC Description
What are the Possible Causes of the DTC U1898 GMC?
- Faulty Hybrid Control Module (HCM)
- Hybrid Control Module harness is open or shorted
- Hybrid Control Module circuit poor electrical connection
- Faulty Starter/Generator Control Module (SGCM)
How to Fix the DTC U1898 GMC?
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 U1898 GMC 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 U1898 GMC Code
1. What are common symptoms of OBDII code U1898 GMC?
- Common symptoms include the vehicle's starter or generator not functioning properly, hybrid system warning lights on the dashboard, and possible issues with the hybrid system's performance.
2. What are the possible causes of OBDII code U1898 GMC?
- The code U1898 GMC typically occurs due to a communication failure between the Starter/Generator Control Module and the Hybrid Control Module. This can be caused by wiring issues, faulty modules, or software glitches.
3. How can I diagnose the OBDII code U1898 GMC?
- Diagnosis involves using an OBDII scanner to retrieve the code and then checking the communication between the Starter/Generator Control Module and the Hybrid Control Module. Inspecting the wiring connections and checking for any other related trouble codes can also help pinpoint the issue.
4. Is it safe to continue driving with OBDII code U1898 GMC present?
- It is not recommended to continue driving the vehicle with the U1898 code active, as it can lead to further hybrid system malfunctions and potential safety hazards. It's best to address the issue promptly.
5. How can I repair OBDII code U1898 GMC?
- Repairing the U1898 code involves diagnosing and fixing the communication issue between the Starter/Generator Control Module and the Hybrid Control Module. This may require repairing or replacing wiring connections, resetting modules, or updating software as needed.
6. Can a DIY enthusiast fix OBDII code U1898 GMC?
- While some DIY enthusiasts may have the skills to diagnose and repair the U1898 code, it is recommended to seek assistance from a professional technician with experience working on hybrid systems due to the complexity involved.
7. Will resetting the trouble codes fix OBDII code U1898 GMC?
- Resetting the trouble codes may temporarily clear the U1898 code, but if the underlying communication issue between the modules is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem.
8. How much does it cost to fix OBDII code U1898 GMC at a repair shop?
- The cost of fixing the U1898 code can vary depending on the specific cause of the issue, the labor rates of the repair shop, and any parts that may need to be replaced. It's best to get a diagnostic assessment from a trusted repair shop for an accurate cost estimate.
9. Are there any recalls related to OBDII code U1898 GMC?
- It's advisable to check with the manufacturer or a certified dealership to see if there are any recalls or technical service bulletins related to the U1898 code in your specific GMC vehicle model.
10. How can I prevent OBDII code U1898 GMC from happening again?
- To prevent the U1898 code from reoccurring, regular maintenance checks on the hybrid system components, ensuring proper wiring connections, and addressing any related trouble codes promptly can help maintain the system's communication integrity.
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