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 helps the car know how hard you're pressing the brake. It's like when your game controller doesn't know how hard you're pressing a button.
The P0555 code indicates a malfunction in the brake booster pressure sensor circuit, which is responsible for monitoring the pressure in the brake booster.
The brake booster pressure sensor is part of the vehicle's braking system. It measures the pressure inside the brake booster and sends this information to the vehicle's computer. If the sensor or circuit fails, the computer may not be able to accurately determine the amount of braking force being applied, which can affect braking performance.
• Illuminated check engine light
• Reduced braking performance
• Increased brake pedal effort
• Unusual noises when braking
• Faulty brake booster pressure sensor
• Damaged or corroded wiring or connectors
• Faulty or failing brake booster
• Vacuum leaks in the brake booster system
• Issues with the vehicle's PCM (Powertrain Control Module)
Brake Booster: A component that helps reduce the effort needed to apply the brakes.
PCM: Powertrain Control Module, the vehicle's computer that manages engine and transmission functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the brake booster pressure sensor and its wiring for damage.
• Check for vacuum leaks in the brake booster system.
• Test the brake booster pressure sensor for proper operation.
• Replace the brake booster pressure sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Fix any vacuum leaks in the brake booster system.
• Replace the brake booster if it is failing.
• OBD-II scanner
• Multimeter
• Vacuum gauge
• Wrench set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect brake components for wear and damage.
• Ensure proper maintenance of the braking system.
• Address any brake-related issues promptly.
Sensor Issue
• Do not ignore the check engine light.
• Get the braking system inspected by a professional.
• Avoid driving in heavy traffic until the issue is resolved.
Repairs may be covered under the vehicle's powertrain or emissions warranty.
The P0555 code has been associated with issues in vehicles with electronic brake systems, particularly in models from the early 2000s.
High – This code can affect braking performance, which is critical for safe driving.
Driving with compromised braking can be dangerous. Address this issue immediately to ensure vehicle safety.
• Vehicle engine running
• Brake pedal applied
The brake booster pressure sensor is typically located on or near the brake booster, which is usually found on the driver's side of the engine compartment, near the firewall.
Q: Can I drive with a P0555 code?
A: It's not recommended to drive with this code, as it can affect your vehicle's braking performance.
Q: How do I reset the P0555 code?
A: After fixing the issue, you can reset the code using an OBD-II scanner.
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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