Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the sensor on the left back wheel is getting too much power or signal. It's like when a video game controller is plugged in wrong and doesn't work right.
The code C050F indicates that the vehicle's computer has detected a high voltage or signal from the left rear wheel speed sensor. This sensor is crucial for monitoring the speed of the wheel and is part of the vehicle's anti-lock braking system (ABS).
The left rear wheel speed sensor is responsible for sending data to the ABS control module about the speed of the wheel. A 'circuit high' condition means that the voltage or signal being sent by the sensor is higher than expected, which can be caused by wiring issues, a faulty sensor, or a problem with the ABS module itself.
• ABS warning light on the dashboard
• Inoperative ABS system
• Unusual braking behavior
• Faulty wheel speed sensor
• Damaged or corroded wiring harness
• Faulty ABS control module
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics II
Multimeter: A tool used to measure electrical voltage, current, and resistance
• Inspect the wiring and connector for damage or corrosion.
• Test the wheel speed sensor with a multimeter.
• Check the ABS control module for faults.
• Replace the faulty wheel speed sensor.
• Repair or replace damaged wiring.
• Replace the ABS control module if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$100 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect wheel speed sensors and wiring.
• Keep the ABS system clean and free of debris.
• Perform routine maintenance checks.
Sensor Issue
• Do not ignore the ABS warning light.
• Have the vehicle inspected by a professional if unsure.
• Avoid hard braking until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on ABS components.
This code has been reported in various GM vehicles and is often linked to sensor or wiring issues.
Moderate – While the vehicle can still be driven, the ABS system may not function properly, affecting braking performance.
Driving with a malfunctioning ABS can increase stopping distances and the risk of skidding. It is important to address this issue promptly.
• Vehicle must be in motion to test the wheel speed sensor.
• Ensure the vehicle is on a flat surface for accurate diagnostics.
The left rear wheel speed sensor is located near the brake assembly on the left rear wheel.
Q: Can I drive with a C050F code?
A: While you can drive the vehicle, it's not recommended because the ABS may not work correctly, which can affect braking safety.
Q: How do I reset the ABS light?
A: Fix the underlying issue first. Once repaired, the ABS light should turn off automatically. If not, an OBD-II scanner can be used to reset it.
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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