Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in the car is getting a weak signal from the sensor that measures how hard you are pressing the brake pedal.
The C064B code indicates that the brake pressure sensor is sending a signal that is lower than expected to the vehicle's control module.
The brake pressure sensor monitors the hydraulic pressure within the brake system. If the sensor's output voltage is below the specified range, the vehicle's control module will trigger the C064B code. This could be due to a wiring issue, a faulty sensor, or a problem with the control module itself.
• ABS warning light on
• Brake system warning light on
• Reduced braking performance
• Faulty brake pressure sensor
• Damaged or corroded wiring/connectors
• Faulty control module
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
ABS: Anti-lock Braking System, a safety system that prevents wheels from locking up during braking.
• Check for any other related codes.
• Inspect the brake pressure sensor and its wiring for damage.
• Test the sensor output voltage with a multimeter.
• Replace the brake pressure sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure connectors are clean and free of corrosion.
• Perform routine maintenance checks.
Sensor Issue
• Do not ignore the warning lights on your dashboard.
• Have your brake system inspected by a professional.
• Avoid driving in hazardous conditions until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage on brake components.
This code has been associated with issues in vehicles with electronic brake control systems, particularly in models with a history of sensor-related faults.
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 road safety regulations.
• Vehicle at operating temperature
• Brakes applied at various pressures
The brake pressure sensor is typically located near the master cylinder or within the ABS module.
Q: Can I drive with a C064B code?
A: It's not recommended to drive with this code active, as it indicates a potential issue with the brake system.
Q: How do I reset the C064B code?
A: After addressing the issue, use an OBD-II scanner to clear the code. If the problem is fixed, it should not return.
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.
View on Amazon
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.
View on Amazon
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.