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 front wheel, which helps measure how fast the wheel is turning, is getting a signal that's too strong.
The C0654 code indicates that the vehicle's control module has detected a high voltage signal from the left front wheel speed sensor B circuit.
The wheel speed sensor is part of the anti-lock braking system (ABS) and traction control system. It monitors the speed of the wheel and sends this information to the vehicle's control module. A 'Circuit High' code means that the voltage being sent by the sensor is higher than expected, which can affect the vehicle's braking and stability systems.
• ABS warning light on
• Traction control warning light on
• Inconsistent speedometer readings
• Faulty wheel speed sensor
• Damaged wiring or connectors
• Faulty ABS control module
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics, Second Generation
• Inspect the wheel speed sensor and its wiring for damage.
• Use a multimeter to check the voltage and resistance of the sensor.
• Test the ABS control module for faults.
• Replace the faulty wheel speed sensor.
• Repair or replace damaged wiring or connectors.
• Replace the ABS control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect wheel sensors and wiring.
• Keep the wheel area clean to prevent debris buildup.
• Perform routine ABS system checks.
Sensor Issue
• Do not ignore ABS or traction control warning lights.
• Have the vehicle checked by a professional if the light comes on.
• Avoid driving in harsh conditions until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage on ABS components.
This code has commonly appeared in vehicles with older ABS systems or those exposed to harsh driving conditions.
Moderate – It is important to address this issue to ensure proper braking performance.
Driving with a malfunctioning ABS system can be dangerous, especially in adverse weather conditions.
• Vehicle must be in motion to test wheel speed sensor.
• Ensure the vehicle is on a stable surface.
The left front wheel speed sensor is located near the brake rotor on the left front wheel.
Q: Can I drive with the C0654 code?
A: It's not recommended to drive for extended periods with this code active, as it can affect braking performance.
Q: How do I reset the ABS light?
A: After repairs, the ABS light can be reset by clearing the codes with an OBD-II scanner.
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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