Engine-CodesGeneric – C111A:43

C111A:43 Code - Trailer Brake Power Control Module EEPROM Error

Quick Answer

The C111A:43 diagnostic trouble code refers to a Trailer Brake Power Control Module EEPROM Error. Common causes include Corrupted data within the EEPROM, Electrical issues such as wiring faults or short circuits, Water damage to 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
C111A:43 indicates Trailer Brake Power Control Module EEPROM Error.
Common causes
Common causes include Corrupted data within the EEPROM, Electrical issues such as wiring faults or short circuits, Water damage to 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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code C111A:43 Description

The C111A:43 diagnostic trouble code refers to a Trailer Brake Power Control Module EEPROM Error. This error code indicates that there is an issue with the electronic control module responsible for managing the power distribution to the trailer brakes. The EEPROM (Electrically Erasable Programmable Read-Only Memory) within the module has encountered an error, which can lead to malfunctioning of the trailer brake system.

OBDII Code C111A:43 - Trailer Brake Power Control Module EEPROM Error
C111A:43 Code - Trailer Brake Power Control Module EEPROM Error

Common Causes of C111A:43

  1. Corrupted data within the EEPROM
  2. Electrical issues such as wiring faults or short circuits
  3. Water damage to the Trailer Brake Power Control Module
  4. Faulty connections or poor grounding
  5. Software glitches or programming errors

Symptoms of C111A:43

  1. Trailer brakes not engaging properly
  2. Uneven braking between the vehicle and trailer
  3. ABS warning light illuminated on the dashboard
  4. Loss of trailer brake functionality
  5. Inconsistent braking response when towing

How to Fix C111A:43

  1. Begin by conducting a thorough inspection of the trailer brake system, including the Trailer Brake Power Control Module.
  2. Use a diagnostic scan tool to retrieve the specific error codes and identify the EEPROM error.
  3. Check for any loose connections, damaged wiring, or water intrusion that may be affecting the module's operation.
  4. If the issue lies with the EEPROM, the module may need to be reprogrammed or replaced to resolve the error.
  5. Test the trailer brake system after repairs to ensure proper functionality and calibration.

Cost to Fix C111A:43

The cost of repairing a Trailer Brake Power Control Module EEPROM Error can vary depending on the extent of the damage and the specific repairs needed. On average, the parts for this repair can range from $200 to $500, while labor costs may add an additional $100 to $300. Keep in mind that diagnostic time and labor rates can fluctuate based on location, vehicle make and model, and the complexity of the repair. It is advisable to consult with a professional mechanic to obtain a more accurate estimate based on your individual circumstances.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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