C1595 Cadillac Code - Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
Quick Answer
The Chassis Control Module-Auxiliary 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
- C1595 Cadillac 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 C1595 Cadillac Description
What are the Possible Causes of the DTC C1595 Cadillac?
- 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
- Faulty Chassis Control Module-Auxiliary
How to Fix the DTC C1595 Cadillac?
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 C1595 Cadillac 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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Frequently Asked Questions about C1595 Cadillac Code
1. What does the OBDII code C1595 mean on a Cadillac?
C1595 indicates a Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction, meaning there's an issue with the communication or circuit between the trailer brake signal and the control module.
2. What are the common symptoms of code C1595 on a Cadillac?
Symptoms include the trailer brakes not functioning, warning lights on the dashboard, a service trailer brake system message, or a lack of trailer brake response when towing.
3. What causes the C1595 code on a Cadillac?
The code can be caused by damaged wiring or connectors, a faulty trailer brake control module, a blown fuse, or a malfunctioning brake pedal switch.
4. Can a loose or corroded trailer connection cause C1595?
Yes, loose or corroded trailer connectors can interrupt the signal or power flow, triggering the C1595 code.
5. How can I troubleshoot the C1595 code on my Cadillac?
Start by inspecting the trailer brake wiring and connectors for damage or corrosion, checking the fuses, and ensuring the trailer brake control module is securely connected.
6. Is it safe to drive with the C1595 code active?
While the vehicle may still drive, towing a trailer may be unsafe due to non-functional trailer brakes, which can increase stopping distances.
7. How do I fix the C1595 code on a Cadillac?
Repairs may include replacing damaged wires or connectors, cleaning corroded connections, replacing a blown fuse, or replacing the trailer brake control module if it’s faulty.
8. Can a faulty brake pedal switch cause the C1595 code?
Yes, if the brake pedal switch fails, it may not send the proper signal to the trailer brake system, triggering the C1595 code.
9. How much does it cost to repair a C1595 code on a Cadillac?
Repair costs vary depending on the issue, but simple wiring or connector repairs may cost $50–$150, while replacing the trailer brake control module could range from $200–$500 or more.
10. Do I need to reprogram the trailer brake control module after replacing it?
In some cases, the new module may require programming or calibration using a diagnostic tool to ensure proper functionality with the vehicle.
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