U1128 Chevrolet Code - Lost Communications With Radio
Quick Answer
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Radio, Radio harness is open or shorted, Radio 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
- U1128 Chevrolet indicates Lost Communications With Radio.
- Common causes
- Common causes include Faulty Radio, Radio harness is open or shorted, Radio 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 U1128 Chevrolet Description
What are the Possible Causes of the DTC U1128 Chevrolet?
- Faulty Radio
- Radio harness is open or shorted
- Radio circuit poor electrical connection
How to Fix the DTC U1128 Chevrolet?
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 U1128 Chevrolet 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 U1128 Chevrolet Code
1. What does the OBDII code U1128 mean for a Chevrolet?
U1128 indicates a loss of communication between the vehicle's main control modules and the radio system.
2. What are the common symptoms of the U1128 code?
Symptoms include the radio not working, loss of infotainment functions, unresponsive touch screen, and possible warning lights on the dashboard.
3. What causes the U1128 code on a Chevrolet?
Common causes include faulty wiring or connectors, a malfunctioning radio module, or issues with the CAN communication network.
4. Can the U1128 code affect other vehicle systems?
Yes, it can potentially disrupt communication between other modules, leading to additional system malfunctions.
5. How do I diagnose the U1128 code?
Start by inspecting the radio wiring and connectors for damage or loose connections. Use a scan tool to check for other related communication errors.
6. Can a software glitch cause the U1128 code?
Yes, outdated or corrupted software in the radio or related control modules can trigger this code.
7. How do I fix the U1128 code on my Chevrolet?
Repairs may involve securing or replacing damaged wiring, updating module software, or replacing a faulty radio module.
8. Is it safe to drive with the U1128 code?
While it may not directly impact drivability, the loss of radio communication can affect convenience and potentially safety features linked to the infotainment system.
9. How much does it cost to repair the U1128 code?
Repair costs vary but may range from $100-$500, depending on whether the issue is wiring-related or if a module replacement is required.
10. Can disconnecting the battery reset the U1128 code?
Disconnecting the battery might temporarily clear the code, but the underlying issue must be resolved to prevent the code from returning.
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