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 car's computer has detected a problem with the sensor that measures how hard you press the brake pedal. It's saying the sensor is giving a reading that's too high.
The brake pressure sensor monitors the pressure applied to the brake system. This code indicates that the sensor is reporting a higher than normal voltage signal, which could mean a malfunction.
The Brake Pressure Sensor M Circuit High code is triggered when the vehicle's Electronic Control Unit (ECU) detects a voltage signal from the brake pressure sensor that is above the expected range. This could be due to a short circuit, a faulty sensor, or wiring issues.
• Brake warning light on the dashboard
• Reduced braking performance
• ABS system may be disabled
• Faulty brake pressure sensor
• Short circuit in the sensor wiring
• Damaged sensor connector
ECU: Electronic Control Unit, the computer that controls various vehicle systems.
ABS: Anti-lock Braking System, helps prevent the wheels from locking up during braking.
• Use an OBD-II scanner to confirm the code.
• Inspect the brake pressure sensor wiring and connectors for damage.
• Test the brake pressure sensor for proper operation.
• Replace the faulty brake pressure sensor.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular inspection of brake system components.
• Ensure proper maintenance of electrical connections.
• Avoid exposure of sensors to extreme conditions.
Sensor Issue
• Do not ignore the brake warning light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving in heavy traffic until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on brake system components.
This code has been associated with issues in models with electronic brake systems, especially in older vehicles with high mileage.
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 ignition on.
• Brake system fully assembled.
The brake pressure sensor is typically located near the brake master cylinder or integrated into the ABS module.
Q: Can I drive with a C064A code?
A: It's not recommended to drive with a brake system issue as it can affect your ability to stop the vehicle safely.
Q: How do I reset the brake warning light?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the light should stay off.
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.