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 is detecting a problem with the brake pressure sensor. It's like when a video game controller button is stuck and keeps sending the wrong signal.
The brake pressure sensor is sending a signal that is higher than expected, indicating a possible electrical issue or sensor malfunction.
The C063A code is triggered when the vehicle's control module detects a high voltage signal from the brake pressure sensor circuit. This could be due to a wiring issue, a faulty sensor, or a problem with the control module itself.
• ABS warning light on
• Brake warning light on
• Reduced braking performance
• Faulty brake pressure sensor
• Damaged or corroded wiring/connectors
• Faulty control module
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics, second generation
• Inspect the brake pressure sensor and its wiring for damage.
• Use a multimeter to check the voltage and resistance in the sensor circuit.
• Test the control module for proper operation.
• Replace the faulty brake pressure sensor.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure proper maintenance of electrical connections.
• Avoid exposure of components to moisture and corrosion.
Sensor Issue
• Do not ignore the ABS warning light.
• Have the brake system inspected by a professional.
• Avoid driving aggressively until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on brake system components.
This code has been reported in vehicles with high mileage or those exposed to harsh weather conditions.
Moderate – It is important to address this issue soon to maintain optimal braking performance.
Driving with a malfunctioning brake system can be dangerous. Ensure repairs are performed by a qualified technician.
• Vehicle parked on a flat surface
• Ignition in the 'On' position
The brake pressure sensor is typically located near the master cylinder or integrated into the ABS module.
Q: Can I drive with this code?
A: It's not recommended to drive with a brake system issue. Have it checked as soon as possible.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced braking performance and increased stopping distances, posing a safety risk.
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.