U0160 is a generic OBD-II network communication diagnostic trouble code indicating that one or more vehicle control modules have lost communication with the Sound System Control Module. Depending on the vehicle, this module may control or communicate with the radio, amplifier, audio unit, speakers, infotainment system, or other components of the vehicle's audio network.
The exact module name, location, communication network, wiring configuration, and diagnostic procedure vary by manufacturer, model, and model year. Vehicle-specific service information should be used for the final diagnosis.
U0160 Code Details
Code: U0160
Meaning: Lost Communication With Sound System Control Module
Type: Generic OBD-II Network Communication Code
Main System: Audio / Infotainment / Vehicle Communication Network
Symptoms of U0160
- Radio or audio system may not operate.
- No sound from the vehicle speakers.
- Infotainment system may fail to start.
- Audio controls may become unavailable.
- Amplifier communication may be lost.
- Steering-wheel audio controls may not respond.
- Multiple communication-related DTCs may be stored.
- The scan tool may be unable to communicate with the sound system module.
- Intermittent audio or infotainment operation may occur.
Common Causes of U0160
- Low battery or system voltage.
- Blown fuse supplying the audio or sound system module.
- Missing battery or ignition power.
- Poor or damaged module ground.
- Open CAN High or CAN Low communication circuit.
- Shorted communication wiring.
- Loose or corroded electrical connector.
- Damaged wiring behind the dashboard or center console.
- Water intrusion affecting connectors or modules.
- Another control module interfering with the communication network.
- Internal failure of the sound system control module.
- Incorrect module configuration or software fault.
How Serious Is U0160?
U0160 is generally a low-to-moderate severity communication fault. It usually affects audio, infotainment, or related convenience functions rather than the engine or basic vehicle operation.
However, some vehicles integrate additional functions into the audio or infotainment module, so the actual effect should be determined from the vehicle-specific wiring and module architecture.
Can You Drive With U0160?
In most cases, yes. U0160 normally does not prevent the vehicle from starting or driving. The main effects are usually loss of audio, infotainment, amplifier, or related communication functions.
How to Diagnose U0160
1. Scan All Control Modules
Perform a complete vehicle scan and record U0160 together with any other communication, voltage, body, or infotainment codes. If several modules report communication faults, investigate the common network before replacing the sound system module.
2. Check Battery and Charging Voltage
Verify battery condition and charging-system voltage. Low voltage can cause infotainment and communication modules to reset or disappear from the network.
3. Check Audio System Fuses
Use the vehicle-specific fuse diagram to identify the fuses supplying the sound system control module, radio, amplifier, or infotainment unit. If a fuse is blown, determine why it failed before installing another fuse.
4. Test Power and Ground
Check all required battery and ignition feeds and verify the module ground under the conditions specified by the manufacturer. A missing power or ground circuit can make a good module appear to be defective.
5. Inspect Connectors and Wiring
Inspect connectors behind the dashboard, center console, radio, and amplifier for loose terminals, corrosion, bent pins, damaged locks, or water contamination. Check the harness for cuts, chafing, and previous repairs.
6. Check Communication Circuits
Inspect the applicable CAN High and CAN Low circuits for opens, shorts, excessive resistance, or poor connections. Some audio systems may also use manufacturer-specific communication networks, so the wiring diagram is essential.
7. Verify Module Communication
Use a professional scan tool to determine whether the sound system control module responds to diagnostic requests. If it responds normally but U0160 is stored as history, an intermittent network or power problem may be present.
8. Check Software and Configuration
If electrical and network circuits test correctly, check manufacturer service information for applicable software updates, module configuration procedures, coding, or initialization requirements.
U0160 Oscilloscope Signal Patterns
An oscilloscope can be useful when U0160 is caused by intermittent or distorted network communication. It can reveal abnormal CAN activity, electrical noise, signal distortion, or periods where communication disappears.
Normal / Active
Normal: Consistent communication activity with clean transitions.
Abnormal / Distorted
Abnormal: Noise, distortion, irregular transitions, or intermittent network activity.
Inactive / No Communication
Inactive: Expected communication activity is absent at the tested network point.
Important: These are simplified diagnostic illustrations, not manufacturer-specific waveform specifications. Actual CAN High and CAN Low voltage levels, timing, and network behavior must be compared with the specifications for the exact vehicle.
U0160 Diagnostic Signal Flow
↓
Vehicle Communication Network
↓
Sound System Control Module
↓
Radio / Infotainment / Amplifier
↓
Speakers & Audio Controls
U0160 OBD Live Data
Available parameters depend on the vehicle and scan tool. Where supported, useful information may include sound-system module communication status, system voltage, audio-unit status, amplifier status, network status, and module diagnostic information.
Common Repairs for U0160
- Repair missing power to the sound system module.
- Repair poor or damaged module ground.
- Replace a failed fuse after identifying the cause.
- Repair damaged CAN or other communication wiring.
- Repair loose, corroded, or damaged connectors.
- Repair wiring behind the dashboard or center console.
- Correct water intrusion.
- Repair another module interfering with the communication network.
- Update or reprogram the audio/infotainment module when required.
- Replace the sound system control module after electrical and network faults have been ruled out.
U0160 Repair Cost
- Electrical/network diagnosis: approximately $100–$200+.
- Fuse or wiring repair: approximately $75–$300+.
- Connector/terminal repair: approximately $80–$250+.
- Audio module repair: approximately $150–$600+.
- Module replacement and programming: approximately $400–$1,500+ depending on vehicle.
These are general estimates only. Actual repair costs vary according to vehicle model, module type, labor rates, parts availability, and programming requirements.
Common Repair Mistakes
- Replacing the audio module before checking power and ground.
- Ignoring low battery voltage.
- Failing to inspect connectors and wiring behind the dashboard.
- Replacing the module without testing communication circuits.
- Assuming U0160 automatically means the sound system module has failed.
- Ignoring other communication codes stored in other modules.
- Failing to check applicable software or configuration updates.
- Installing a replacement module without completing required programming or coding.
Related OBD-II Codes
- U0100 – Lost Communication With ECM/PCM.
- U0121 – Lost Communication With Anti-Lock Brake System Module.
- U0140 – Lost Communication With Body Control Module.
- U0150 – Lost Communication With Gateway Module "A".
- U0155 – Lost Communication With Instrument Panel Cluster.
- U0158 – Lost Communication With Telematics Control Module.
- U0161 – Lost Communication With Vehicle Immobilizer Control Module.
FAQ About U0160
Can a weak battery cause U0160?
Yes. Low system voltage can cause the sound system module or other network modules to reset or temporarily stop communicating.
Can CAN wiring cause U0160?
Yes. An open, shorted, damaged, or poorly connected communication circuit can interrupt communication with the sound system control module.
Does U0160 mean the radio module is bad?
No. The module's power, ground, fuses, connectors, and communication circuits should be tested before replacing the module.
Can U0160 cause loss of audio?
Yes. Depending on the vehicle architecture, loss of communication may disable the radio, amplifier, speakers, infotainment functions, or audio controls.
Can an oscilloscope help diagnose U0160?
Yes. An oscilloscope can help identify abnormal communication signals, electrical noise, distortion, or intermittent network activity when a communication fault is suspected.
Does a replacement sound system module need programming?
Some vehicles require coding, programming, configuration, or initialization after module replacement. The exact procedure depends on the manufacturer and vehicle.
Final Takeaway
U0160 is a generic OBD-II network communication code indicating lost communication with the Sound System Control Module.
Begin diagnosis with battery voltage, fuses, module power and ground, connectors, and communication circuits. Do not replace the sound system module until its electrical supply and network communication have been properly verified.