C111B 2016 Chevrolet Silverado Code - Trailer Brake Power Control Module System Voltage
Quick Answer
The C111B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Trailer Brake Power Control Module System Voltage. Common causes include Faulty trailer brake power control module, Wiring or connection issues in the trailer brake system, Low battery voltage affecting the trailer brake power control module. 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
- C111B 2016 Chevrolet Silverado indicates Trailer Brake Power Control Module System Voltage.
- Common causes
- Common causes include Faulty trailer brake power control module, Wiring or connection issues in the trailer brake system, Low battery voltage affecting the trailer brake power control module.
- 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 C111B 2016 Chevrolet Silverado Description
The C111B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Trailer Brake Power Control Module System Voltage. This code indicates a problem with the voltage levels in the trailer brake power control module system. The trailer brake power control module is responsible for managing the power supply to the trailer brakes, ensuring they operate effectively when the vehicle is towing a trailer.
Common Causes of C111B 2016 Chevrolet Silverado
- Faulty trailer brake power control module.
- Wiring or connection issues in the trailer brake system.
- Low battery voltage affecting the trailer brake power control module.
- Corrosion or damage to the electrical connectors in the system.
- Issues with the vehicle's battery or charging system affecting voltage levels.
Symptoms of C111B 2016 Chevrolet Silverado
- Illumination of the trailer brake warning light on the dashboard.
- Inconsistent or weak braking performance while towing a trailer.
- Delayed response when applying the brakes while towing.
- Complete loss of trailer brake function.
How to Fix C111B 2016 Chevrolet Silverado
- Begin by conducting a thorough inspection of the trailer brake power control module and related wiring for any visible damage or corrosion.
- Test the battery voltage to ensure it is within the specified range for proper operation.
- Check the electrical connectors in the trailer brake system for secure connections and signs of damage.
- If necessary, replace the trailer brake power control module or any damaged wiring or connectors.
- Clear the DTC from the vehicle's computer system and test the trailer brake system to ensure proper functionality.
Cost to Fix C111B 2016 Chevrolet Silverado
The cost of repairing the Trailer Brake Power Control Module System Voltage issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, replacing the trailer brake power control module or addressing wiring issues can range from $200 to $500, including parts and labor. Additional costs may apply if other components need to be replaced or if further diagnostics are required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on the individual circumstances of the vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.
Tech Notes for C111B 2016 Chevrolet Silverado
C111B:07 Trailer Brake Power Control Module System Voltage Above Threshold
C111B:5A Trailer Brake Power Control Module System Voltage Plausibility Failure
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Frequently Asked Questions about C111B 2016 Chevrolet Silverado Code
1. What does the OBDII code C111B mean on a 2016 Chevrolet Silverado?
The code C111B indicates a voltage issue in the Trailer Brake Power Control Module system, typically related to improper power or ground connections.
2. What are common symptoms of the C111B code?
Common symptoms include a "Service Trailer Brake System" message on the dashboard, trailer brakes not functioning, and possibly reduced braking performance when towing.
3. What causes the C111B code to appear?
The code is often caused by a faulty trailer brake control module, corroded electrical connections, damaged wiring, or low voltage from the battery or alternator.
4. Can a weak battery trigger the C111B code?
Yes, a weak or failing battery can reduce system voltage and trigger the C111B code, especially under load.
5. How do I diagnose the C111B code?
Start by inspecting the trailer brake control module, checking for corroded or loose connections, testing the wiring harness for damage, and measuring the system's voltage and ground continuity.
6. Can a faulty trailer brake control module cause the C111B code?
Yes, a defective trailer brake control module is a common cause of this code and may need to be replaced if other components check out.
7. How do I fix the C111B code on my Silverado?
Repairs may include cleaning or repairing electrical connections, replacing damaged wiring, or replacing the trailer brake control module if it is confirmed to be faulty.
8. Is it safe to drive with the C111B code active?
Driving without functional trailer brakes can be unsafe, especially when towing heavy loads, as it increases stopping distances and reduces control.
9. Does the C111B code always require module replacement?
No, the issue may simply be due to poor electrical connections or wiring issues, so thorough diagnostics should be performed before replacing the module.
10. Can a blown fuse cause the C111B code?
Yes, a blown fuse in the trailer brake power circuit can disrupt voltage and trigger the C111B code. Inspect and replace any blown fuses as needed.
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