AutoCodes – Chevrolet – C1596 Chevrolet

C1596 Chevrolet Code - Trailer Brake Power Control Module Enable Circuit

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: C1596 Chevrolet indicates Trailer Brake Power Control Module Enable Circuit.
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.

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Code Popularity 1,334

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 17, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code C1596 Chevrolet Description

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. The Diagnostic Trouble Code (DTC) will be set when the Trailer Brake Power Control Module detects a short to ground or open trailer brake enable signal circuit.

OBDII Code C1596 Chevrolet - Trailer Brake Power Control Module Enable Circuit - AutoCodes.com — C1596 Chevrolet Code - Trailer Brake Power Control Module Enable Circuit

What does this mean?

What are the Possible Causes of the DTC C1596 Chevrolet?

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 C1596 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 C1596 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.

Need more information about the C1596 Chevrolet code?

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Information for Specific Chevrolet Models

C1596 2014 Chevrolet Silverado — Trailer Brake Power Control Module Enable Circuit
C1596 2015 Chevrolet Silverado — Trailer Brake Power Control Module Enable Circuit
C1596 2016 Chevrolet Silverado — Trailer Brake Power Control Module Enable Circuit
C1596 2017 Chevrolet Silverado — Trailer Brake Power Control Module Enable Circuit
C1596 2018 Chevrolet Silverado — Trailer Brake Power Control Module Enable Circuit

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.