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Engine-Codes – Generic – B23C2

B23C2 Code - Stop/Start Disable Switch 2 Circuit High

Quick Answer

The B23C2 diagnostic trouble code (DTC) refers to a Stop/Start Disable Switch 2 Circuit High issue. Common causes include Faulty stop/start disable switch, Wiring or electrical connection issues in the circuit, Corrosion or damage to the circuit components. 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
B23C2 indicates Stop/Start Disable Switch 2 Circuit High.
Common causes
Common causes include Faulty stop/start disable switch, Wiring or electrical connection issues in the circuit, Corrosion or damage to the circuit components.
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 07, 2024
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Code B23C2 Description

The B23C2 diagnostic trouble code (DTC) refers to a Stop/Start Disable Switch 2 Circuit High issue. This code indicates that there is a problem with the circuit that controls the stop/start system in the vehicle. The stop/start system is designed to automatically shut off the engine when the vehicle comes to a stop, such as at a traffic light, and then restart it when the driver releases the brake pedal. This feature is intended to improve fuel efficiency and reduce emissions by reducing the amount of time the engine runs while the vehicle is stationary.

OBDII Code B23C2 - Stop/Start Disable Switch 2 Circuit High
B23C2 Code - Stop/Start Disable Switch 2 Circuit High

Common Causes of B23C2

  1. Faulty stop/start disable switch.
  2. Wiring or electrical connection issues in the circuit.
  3. Corrosion or damage to the circuit components.
  4. Faulty control module for the stop/start system.
  5. Software issues in the vehicle's computer system.

Symptoms of B23C2

  1. Check engine light illuminated on the dashboard.
  2. Stop/start system not functioning as expected.
  3. Reduced fuel efficiency.
  4. Engine running continuously at idle, even when stopped.
  5. Possible drivability issues such as rough idling or stalling.

How to Fix B23C2

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble code and further diagnose the issue.
  2. Inspect the stop/start disable switch and its circuit for any visible damage or corrosion. Replace the switch if necessary.
  3. Check the wiring and electrical connections in the circuit for any loose connections or damage. Repair or replace as needed.
  4. Test the control module for the stop/start system to ensure it is functioning correctly. Replace if faulty.
  5. Clear the DTC and test the vehicle to confirm that the issue has been resolved.

Cost to Fix B23C2

The cost of repairing a Stop/Start Disable Switch 2 Circuit High issue can vary depending on the specific cause of the problem and the extent of the repairs needed. Typically, the cost for parts may range from $50 to $200, while labor costs can range from $100 to $300. This means that the total repair cost could be anywhere from $150 to $500. However, it's important to note that these are rough estimates and actual costs may vary based on factors such as the vehicle make and model, location, and the rates charged by the auto repair shop. It's recommended to get quotes from multiple shops to determine the most accurate cost for your specific situation.

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Code B23C2 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 B23C2 Code

What does the OBDII code B23C2 mean?

The B23C2 code indicates a high voltage issue in the Stop/Start Disable Switch 2 Circuit, which is responsible for controlling the vehicle's stop/start system.

What are the common symptoms of the B23C2 code?

Symptoms may include the stop/start system being disabled, a warning light on the dashboard, or the engine not restarting automatically.

What causes the B23C2 code to be triggered?

Common causes include a faulty stop/start disable switch, damaged or corroded wiring, a short circuit, or a malfunctioning control module.

Can I drive my car with the B23C2 code?

Yes, but the stop/start system may not function properly, which could affect fuel efficiency. It’s best to address the issue promptly to avoid further problems.

How is the B23C2 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the stop/start disable switch and related wiring, and test for proper voltage levels in the circuit.

How do you fix the B23C2 code?

Repairs may involve replacing the stop/start disable switch, repairing or replacing damaged wiring, or reprogramming or replacing the control module if necessary.

How much does it cost to fix the B23C2 code?

The cost can vary depending on labor rates and parts, but replacing a stop/start disable switch generally ranges from $50 to $200, excluding diagnostic fees.

Can I reset the B23C2 code without fixing it?

Resetting the code without addressing the root cause may temporarily clear the warning, but the issue is likely to return until repaired.

What tools are needed to troubleshoot the B23C2 code?

A diagnostic scan tool, multimeter, and wiring diagram for the stop/start system are typically required for troubleshooting this code.

Is the B23C2 code specific to certain vehicles?

This code is most commonly found in vehicles equipped with a stop/start system but can apply to various makes and models that use the same diagnostic standards.

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