C1117 Code - Manual Trailer Brake Apply Request Signal 2 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
- C1117 indicates Manual Trailer Brake Apply Request Signal 2 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 C1117 Description
What are the Possible Causes of the DTC C1117?
- 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 C1117?
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 C1117 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 Makes
- C1117 Buick — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 Cadillac — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 Chevrolet — Manual Trailer Brake Apply Request Signal 2 Malfunction
- C1117 GMC — Manual Trailer Brake Apply Request Signal 2 Malfunction
Frequently Asked Questions about C1117 Code
1. What are the common symptoms of OBDII code C1117 (Manual Trailer Brake Apply Request Signal 2 Malfunction)?
- Common symptoms include the trailer brakes not engaging properly or at all, the trailer brake warning light on the dashboard illuminating, and potential issues with the trailer brake system.
2. What are the possible causes of OBDII code C1117?
- Possible causes include faulty wiring in the trailer brake system, a malfunctioning trailer brake controller, poor electrical connections, or issues with the brake switch.
3. How can I diagnose the cause of OBDII code C1117?
- Diagnose by inspecting the trailer brake wiring for damage, testing the trailer brake controller for proper function, checking electrical connections for corrosion, and ensuring the brake switch is working correctly.
4. Can driving with OBDII code C1117 cause further damage?
- Driving with this code may lead to ineffective trailer braking, potentially compromising safety while towing. It is advisable to address the issue promptly.
5. How can I repair OBDII code C1117?
- Repair options include fixing or replacing damaged wiring, repairing or replacing the trailer brake controller, cleaning or securing electrical connections, and replacing a faulty brake switch if necessary.
6. Is it safe to continue using the trailer with OBDII code C1117 present?
- It is not recommended to continue using the trailer until the issue causing the code is identified and resolved to ensure safe operation of the trailer brakes.
7. Can a malfunctioning trailer brake apply request signal affect the vehicle's overall braking system?
- While the issue primarily affects the trailer's braking system, a malfunctioning trailer brake apply request signal can potentially impact the overall braking performance of the vehicle while towing.
8. How can I prevent OBDII code C1117 from reoccurring?
- Regularly inspect and maintain the trailer brake system, ensure proper installation of components, and address any issues promptly to prevent the code from reoccurring.
9. Are there specific tools needed to diagnose and repair OBDII code C1117?
- Basic tools such as a multimeter, wire strippers, and electrical tape may be required to diagnose and repair issues related to OBDII code C1117 in the trailer brake system.
10. Can a professional mechanic help diagnose and repair OBDII code C1117?
- Yes, a professional mechanic with experience in trailer brake systems can efficiently diagnose and repair OBDII code C1117 to ensure proper functioning of the trailer brakes.
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