Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the sensor that tells the car's computer where the brake pedal is. It's like when a toy car's remote control doesn't know if you're pressing the stop button.
The brake pedal position sensor is responsible for communicating the position of the brake pedal to the vehicle's computer system. If there's an issue with this sensor or its circuit, the vehicle may not correctly interpret the brake pedal's position.
C0043 indicates that the vehicle's computer has detected a malfunction in the circuit related to the brake pedal position sensor, specifically Circuit B. This could be due to wiring issues, a faulty sensor, or other related components.
• ABS warning light on the dashboard
• Unresponsive or erratic brake pedal behavior
• Brake lights not functioning properly
• Faulty brake pedal position sensor
• Damaged or corroded wiring or connectors
• Faulty or malfunctioning ABS module
OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics in vehicles.
ABS: Anti-lock Braking System, a safety system that prevents the wheels from locking up during braking.
• Use an OBD-II scanner to confirm the code.
• Inspect the brake pedal position sensor and its wiring for damage.
• Test the sensor's voltage and resistance with a multimeter.
• Replace the brake pedal position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reset the vehicle's computer system and clear the code.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Chevrolet Malibu
• Ford F-150
• Toyota Camry
• Regularly inspect and maintain brake system components.
• Ensure connectors and wiring are free from corrosion.
• Perform routine diagnostic checks.
Sensor Issue
• Do not ignore the ABS warning light.
• Have the brake system inspected by a professional.
• Avoid driving the vehicle if brake performance is compromised.
Check with your vehicle's manufacturer for specific warranty coverage related to the brake system.
This code has been associated with brake system issues in various vehicle models, often related to sensor or wiring problems.
High – Brake system issues can affect vehicle safety and should be addressed promptly.
Driving with a malfunctioning brake system can be dangerous and may violate safety regulations.
• Vehicle stationary with ignition on
• Brake pedal pressed and released
The brake pedal position sensor is typically located near the brake pedal assembly under the dashboard.
Q: Can I drive with a C0043 code?
A: It's not recommended to drive with this code active, as it may affect braking performance.
Q: How do I reset the ABS light?
A: After repairs, use an OBD-II scanner to clear the code and reset the ABS light.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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