C1112 Code - Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
Quick Answer
The chassis control module receives inputs from the trailer brake power control module; these inputs are used to determine trailer connection and the amount of voltage supplied to the trailer brakes. Common causes include Faulty Trailer Brake Power Control Module, Trailer Brake Power Control Module harness is open or shorted, Trailer Brake Power Control Module 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
- C1112 indicates Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction.
- Common causes
- Common causes include Faulty Trailer Brake Power Control Module, Trailer Brake Power Control Module harness is open or shorted, Trailer Brake Power Control Module 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 C1112 Description
What are the Possible Causes of the DTC C1112?
- Faulty Trailer Brake Power Control Module
- Trailer Brake Power Control Module harness is open or shorted
- Trailer Brake Power Control Module circuit poor electrical connection
How to Fix the DTC C1112?
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 C1112 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
- C1112 Buick — Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
- C1112 Cadillac — Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
- C1112 Chevrolet — Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
- C1112 GMC — Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
- C1112 Hyundai — Sensor Source Voltage
- C1112 KIA — Sensor Source Voltage
Frequently Asked Questions about C1112 Code
1. What are common symptoms of OBDII code C1112 (Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction)?
- Common symptoms include the trailer brake system not functioning properly, the trailer brake warning light illuminating on the dashboard, and potential issues with trailer brake power control.
2. What are some possible causes of OBDII code C1112?
- Possible causes may include damaged wiring or connectors in the trailer brake system, a malfunctioning trailer brake power control module, faulty trailer brake sensors, or issues with the trailer brake signal circuit.
3. How can I diagnose the cause of OBDII code C1112?
- Diagnosing this code typically involves inspecting the trailer brake system wiring, connectors, and components for damage or loose connections. Using a diagnostic scanner to check for specific faults in the circuit can also help pinpoint the issue.
4. Can I still drive my vehicle with OBDII code C1112 present?
- It is not recommended to drive your vehicle with this code present, as it indicates a malfunction in the trailer brake system that could affect your ability to safely tow a trailer.
5. How can I repair OBDII code C1112?
- Repair options may include repairing or replacing damaged wiring and connectors, replacing the trailer brake power control module if faulty, or addressing any issues with the trailer brake sensors. Seeking professional help may be necessary for complex repairs.
6. Are there any safety concerns associated with OBDII code C1112?
- Yes, there are safety concerns as this code relates to the trailer brake system, which is crucial for safe towing. Ignoring this code could lead to a loss of trailer brake functionality, potentially causing accidents or damage.
7. How do I reset OBDII code C1112 after making repairs?
- After making necessary repairs to address the root cause of the code, you can reset it using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the code from the system.
8. Can weather conditions affect OBDII code C1112?
- Extreme weather conditions, such as exposure to water or snow, can sometimes lead to issues in the trailer brake system wiring or components, potentially triggering OBDII code C1112.
9. Is it common for OBDII code C1112 to reoccur after repairs?
- If the underlying issue causing the code is not properly addressed during repairs, there is a possibility that OBDII code C1112 may reoccur. Thorough diagnostic and repair procedures can help prevent this from happening.
10. Can I prevent OBDII code C1112 from happening again in the future?
- Regularly inspecting and maintaining the trailer brake system, ensuring proper installation of trailer brake components, and avoiding overloading trailers can help prevent OBDII code C1112 from occurring again in the future.
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