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 not getting a good signal from a sensor that measures how hard you're pressing the brake pedal.
The C05C6 code is triggered when the Brake Pressure Sensor F circuit sends a low voltage signal to the Engine Control Module (ECM).
The Brake Pressure Sensor F is responsible for monitoring the pressure applied to the brake system. When the sensor's circuit voltage is lower than expected, it can indicate a problem with the sensor itself, the wiring, or the connections. This can affect the vehicle's braking performance and safety systems.
• ABS warning light illuminated
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake pressure sensor
• Damaged wiring or connectors
• Poor electrical connection
ECM: Engine Control Module
ABS: Anti-lock Braking System
• Inspect the brake pressure sensor and its wiring for damage.
• Check the electrical connections for corrosion or looseness.
• Use a multimeter to test the sensor's voltage output.
• Replace the faulty brake pressure sensor.
• Repair or replace damaged wiring or connectors.
• Ensure all electrical connections are secure and clean.
• OBD-II scanner
• Multimeter
• Wrench set
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure electrical connections are clean and secure.
• Replace worn or damaged sensors promptly.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
Check with the vehicle manufacturer for warranty coverage on brake system components.
This code has been associated with issues in vehicles with advanced braking systems and is more common in models with electronic brake distribution.
High – Brake system issues can affect vehicle safety.
Driving with impaired brakes can be dangerous and may violate traffic safety regulations.
• Vehicle parked on a level surface
• Ignition in the 'On' position without starting the engine
The brake pressure sensor is typically located near the master cylinder or integrated into the ABS module.
Q: Can I drive with a C05C6 code?
A: It's not recommended as it may affect braking performance.
Q: How do I reset the C05C6 code?
A: Fix the issue and use an OBD-II scanner to clear the code.
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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