C1118 Chevrolet Code - Trailer Brake Control Sensitivity Switch Circuit Malfunction
Quick Answer
The trailer brake control system has a control panel with the trailer gain and manual apply switches. Common causes include Faulty Trailer Brake Control Switch, Trailer Brake Control Switch harness is open or shorted, Trailer Brake Control Switch 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
- C1118 Chevrolet indicates Trailer Brake Control Sensitivity Switch Circuit Malfunction.
- Common causes
- Common causes include Faulty Trailer Brake Control Switch, Trailer Brake Control Switch harness is open or shorted, Trailer Brake Control Switch 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 C1118 Chevrolet Description
What are the Possible Causes of the DTC C1118 Chevrolet?
- Faulty Trailer Brake Control Switch
- Trailer Brake Control Switch harness is open or shorted
- Trailer Brake Control Switch circuit poor electrical connection
- Faulty Chassis Control Module-Auxiliary
How to Fix the DTC C1118 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 C1118 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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Information for Specific Chevrolet Models
- C1118 2014 Chevrolet Silverado — Trailer Brake Control Sensitivity Switch Circuit Malfunction
- C1118 2015 Chevrolet Silverado — Trailer Brake Control Sensitivity Switch Circuit Malfunction
- C1118 2016 Chevrolet Silverado — Trailer Brake Control Sensitivity Switch Circuit Malfunction
- C1118 2017 Chevrolet Silverado — Trailer Brake Control Sensitivity Switch Circuit Malfunction
- C1118 2018 Chevrolet Silverado — Trailer Brake Control Sensitivity Switch Circuit Malfunction
Frequently Asked Questions about C1118 Chevrolet Code
1. What are the common symptoms of OBDII code C1118 in a Chevrolet related to the Trailer Brake Control Sensitivity Switch Circuit Malfunction?
- Common symptoms include the trailer brake system not functioning properly, warning lights on the dashboard, and potential issues with trailer braking responsiveness.
2. What are the possible causes of OBDII code C1118 in a Chevrolet indicating the Trailer Brake Control Sensitivity Switch Circuit Malfunction?
- Possible causes can include faulty trailer brake control modules, damaged wiring or connectors, sensor malfunctions, or issues with the sensitivity switch circuit itself.
3. How can I diagnose the Trailer Brake Control Sensitivity Switch Circuit Malfunction causing OBDII code C1118 in my Chevrolet?
- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the trailer brake control system components, checking wiring integrity, and testing the sensitivity switch circuit.
4. Can I continue to drive my Chevrolet with OBDII code C1118 related to the Trailer Brake Control Sensitivity Switch Circuit Malfunction?
- It is not recommended to continue driving with this code present, as it can compromise the effectiveness of the trailer brake system, potentially leading to unsafe towing conditions.
5. How can I repair OBDII code C1118 in my Chevrolet due to the Trailer Brake Control Sensitivity Switch Circuit Malfunction?
- Repair options may include replacing the trailer brake control module, repairing or replacing damaged wiring, fixing sensor issues, or addressing any faults in the sensitivity switch circuit.
6. Are there any DIY tips for troubleshooting OBDII code C1118 related to the Trailer Brake Control Sensitivity Switch Circuit Malfunction in a Chevrolet?
- DIY enthusiasts can start by checking for loose connections, inspecting the wiring for any visible damage, and ensuring proper functioning of the sensitivity switch before seeking professional help.
7. Can weather conditions or external factors trigger OBDII code C1118 in a Chevrolet indicating the Trailer Brake Control Sensitivity Switch Circuit Malfunction?
- While extreme weather conditions or exposure to water can potentially affect the trailer brake system, it is more likely that internal component failures or wiring issues are the primary culprits behind this code.
8. Is it necessary to reset the OBDII system after repairing OBDII code C1118 related to the Trailer Brake Control Sensitivity Switch Circuit Malfunction in a Chevrolet?
- Yes, it is recommended to clear the trouble code and reset the OBDII system after completing repairs to ensure the system recognizes the issue has been resolved.
9. How can I prevent OBDII code C1118 from reoccurring in my Chevrolet after repairing the Trailer Brake Control Sensitivity Switch Circuit Malfunction?
- Regular maintenance checks, proper installation of trailer brake components, and prompt troubleshooting of any issues can help prevent the reoccurrence of this code in the future.
10. Will fixing OBDII code C1118 in a Chevrolet due to the Trailer Brake Control Sensitivity Switch Circuit Malfunction require specialized tools or equipment?
- While basic diagnostic tools are essential, specialized equipment may be needed for in-depth troubleshooting or reprogramming tasks, making professional assistance advisable for complex repairs.
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