AutoCodes – Generic – C0043

C0043 Code - Brake Pedal Position Sensor Circuit 'B'

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Brake Pedal Position Sensor. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor 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
C0043 indicates Brake Pedal Position Sensor Circuit 'B'.
Common causes
Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 7,891
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 02, 2020
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Code C0043 Description

The Anti-Lock Brake System (ABS) Module monitors the Brake Pedal Position Sensor. The ABS Module sets the OBDII code when the Brake Pedal Position Sensor is not to factory specifications.
OBDII Code C0043 - Brake Pedal Position Sensor Circuit 'B' - AutoCodes.com
C0043 Code - Brake Pedal Position Sensor Circuit 'B'

What are the Possible Causes of the DTC C0043?

  • Faulty Brake Pedal Position Sensor
  • Brake Pedal Position Sensor harness is open or shorted
  • Brake Pedal Position Sensor circuit poor electrical connection

How to Fix the DTC C0043?

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 C0043 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 C0043 code?

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Need Help with the Code?

Get the C0043 code diagnosed by a professional: Find a repair shop in your area

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 C0043 Code

1. What are the common symptoms of OBDII code C0043 related to the Brake Pedal Position Sensor Circuit 'B'?

- Common symptoms include issues with the brake lights, traction control system, and cruise control, as well as potential difficulty shifting out of park.

2. What are some possible causes of OBDII code C0043?

- Causes can include a faulty brake pedal position sensor, damaged wiring or connectors in the circuit, or issues with the ABS control module.

3. How can I diagnose the Brake Pedal Position Sensor Circuit 'B' issue associated with code C0043?

- Diagnostic steps may involve checking the brake pedal position sensor for proper operation, inspecting wiring for damage, and using a scan tool to retrieve and clear the code.

4. Can I continue driving my vehicle with OBDII code C0043 present?

- It is not recommended to continue driving with this code active, as it may affect the proper functioning of essential systems like ABS and traction control.

5. How can I repair OBDII code C0043 on my vehicle?

- Repair options may include replacing the brake pedal position sensor, repairing damaged wiring, ensuring proper connections, or seeking assistance from a professional mechanic.

6. Are there any safety concerns associated with OBDII code C0043 and the Brake Pedal Position Sensor Circuit 'B'?

- Yes, as this code can impact the performance of critical safety systems like ABS and traction control, it is important to address the issue promptly to ensure safe driving conditions.

7. Can a DIY enthusiast fix OBDII code C0043 at home?

- Depending on the cause of the issue, some DIYers with the necessary tools and knowledge may be able to address the problem, but professional assistance is recommended for complex repairs.

8. How do I reset OBDII code C0043 after making repairs?

- Once the necessary repairs have been completed, the code can be reset using an OBDII scan tool to clear the fault codes and turn off the warning light.

9. Will OBDII code C0043 cause my vehicle to fail an emissions test?

- If left unresolved, this code may cause your vehicle to fail an emissions test, as it indicates a malfunction in the brake pedal position sensor circuit.

10. Is OBDII code C0043 a common issue in certain vehicle makes and models?

- While the prevalence of this code can vary, it has been reported in various vehicle makes and models, particularly those equipped with ABS and traction control systems.

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