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Engine-Codes – Generic – C1A96

C1A96 Code - Brake Light Signal Stuck High

Quick Answer

The C1A96 diagnostic trouble code (DTC) indicates that the brake light signal in the vehicle is stuck high. Common causes include Faulty brake light switch, Short or open circuit in the wiring, Malfunctioning brake light bulb. 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
C1A96 indicates Brake Light Signal Stuck High.
Common causes
Common causes include Faulty brake light switch, Short or open circuit in the wiring, Malfunctioning brake light bulb.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code C1A96 Description

The C1A96 diagnostic trouble code (DTC) indicates that the brake light signal in the vehicle is stuck high. This means that the brake light circuit is sending a signal indicating that the brake lights are constantly on, even when the brakes are not being applied. This can be a safety hazard as other drivers may not be able to distinguish when you are actually braking, leading to potential accidents on the road.

OBDII Code C1A96 - Brake Light Signal Stuck High
C1A96 Code - Brake Light Signal Stuck High

Common Causes of C1A96

  1. Faulty brake light switch.
  2. Short or open circuit in the wiring.
  3. Malfunctioning brake light bulb.
  4. Problem with the brake light control module.

Symptoms of C1A96

  1. Brake lights staying on constantly, even when the brakes are not being applied.
  2. Battery drain due to the constant power draw from the brake lights.
  3. Error message on the dashboard indicating a brake light malfunction.
  4. Other drivers signaling confusion or frustration on the road due to the misleading brake light signals.

How to Fix C1A96

  1. Start by checking the brake light switch for proper operation. Replace the switch if necessary.
  2. Inspect the wiring for any signs of damage or corrosion. Repair or replace any damaged wiring.
  3. Check the brake light bulbs for any signs of malfunction. Replace any faulty bulbs.
  4. If the issue persists, inspect the brake light control module for any faults. Replace the module if needed.
  5. Test the brake lights to ensure they are functioning properly after the repair process.

Cost to Fix C1A96

The cost of repairing a brake light signal stuck high issue can vary depending on the specific cause of the problem and the make and model of the vehicle. In general, the cost of parts for this repair could range from $50 to $200, while the labor costs could range from $100 to $300. Overall, the total repair cost could be anywhere from $150 to $500. It is important to note that these are rough estimates and actual costs may vary based on location, shop rates, and other factors. It is recommended to get a detailed quote from a reputable auto repair shop for a more accurate cost estimate.

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Code C1A96 Information for Specific Makes

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.

Frequently Asked Questions about C1A96 Code

1. What does OBDII code C1A96 mean?

C1A96 indicates that the brake light signal is stuck in the "high" (on) position, which may be due to a fault in the brake light switch, wiring, or related components.

2. What are the common symptoms of code C1A96?

Common symptoms include brake lights staying on even when the pedal isn’t pressed, inconsistent cruise control function, or a warning light on the dashboard.

3. What causes the C1A96 code to appear?

The code can be triggered by a faulty brake light switch, damaged or shorted wiring, a stuck brake pedal, or issues with the vehicle's BCM (Body Control Module).

4. Can I drive with the C1A96 code active?

While you can drive, it is not recommended as the brake lights staying on can confuse other drivers, and features like cruise control may not function properly.

5. How is the C1A96 code diagnosed?

A mechanic will inspect the brake light switch, check for wiring issues, and use a scan tool to verify the signal from the brake pedal sensor.

6. How do you fix the C1A96 code?

Repairs may include replacing the brake light switch, repairing or replacing damaged wiring, or recalibrating the brake pedal position sensor.

7. Can a faulty brake light switch cause other problems besides C1A96?

Yes, a faulty brake light switch can affect cruise control, ABS, or traction control systems, as they rely on accurate brake pedal input.

8. How much does it cost to fix code C1A96?

The repair cost depends on the issue; replacing a brake light switch typically costs $50-$150, while wiring repairs may vary based on labor.

9. Can I reset the C1A96 code without fixing the issue?

You can clear the code with a scan tool, but it will likely return unless the underlying issue is resolved.

10. Is it possible for the C1A96 code to be caused by a bad BCM?

Yes, although less common, a malfunctioning Body Control Module (BCM) can misinterpret or fail to process the brake light signal properly.

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