U1128 Code - Lost Communications With Radio
Quick Answer
The U1128 diagnostic trouble code (DTC) indicates that there is a communication problem between the vehicle's onboard computer system and the radio unit. Common causes include Loose or damaged wiring connections between the computer system and radio unit, Faulty radio unit or amplifier, Malfunctioning computer system. 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 indicates Lost Communications With Radio.
- Common causes
- Common causes include Loose or damaged wiring connections between the computer system and radio unit, Faulty radio unit or amplifier, Malfunctioning computer system.
- 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.
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Code U1128 Description
The U1128 diagnostic trouble code (DTC) indicates that there is a communication problem between the vehicle's onboard computer system and the radio unit. This can lead to a loss of communication between the two components, resulting in various issues with the radio system. When this code is triggered, it usually means that the vehicle's computer system is unable to receive or transmit data to the radio unit, leading to a malfunction in the radio's operation.
Common Causes of U1128
- Loose or damaged wiring connections between the computer system and radio unit
- Faulty radio unit or amplifier
- Malfunctioning computer system
- Communication network issues within the vehicle
- Water damage to the radio unit or wiring connections
Symptoms of U1128
- Radio not turning on or functioning intermittently
- Loss of sound or poor audio quality from the radio
- Inability to change radio stations or input settings
- Navigation system not displaying correct information
- Bluetooth connectivity issues
How to Fix U1128
- Inspect and repair any loose or damaged wiring connections between the computer system and radio unit.
- Test the radio unit and amplifier for functionality and replace if necessary.
- Check the computer system for any malfunctions and reprogram if needed.
- Diagnose and repair any communication network issues within the vehicle.
- Ensure proper sealing and protection of the radio unit and wiring connections to prevent water damage.
Cost to Fix U1128
The typical repair costs for addressing the U1128 code can vary depending on the specific cause of the communication failure. On average, the cost of parts and labor for this repair can range from $200 to $500. It's important to note that the actual cost may vary based on the location, vehicle make and model, and the rates of the auto repair shop. Additionally, diagnostic time and labor rates can also impact the final cost of the repair. It is recommended to consult with a professional mechanic to get an accurate estimate for addressing the U1128 code in your vehicle.
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Code U1128 Information for Specific Makes
- U1128 Buick — Lost Communications With Radio
- U1128 Cadillac — Lost Communications With Radio
- U1128 Chevrolet — Lost Communications With Radio
- U1128 GMC — Lost Communications With Radio
- U1128 Pontiac — Lost Communications With Radio
Frequently Asked Questions about U1128 Code
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