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 having trouble getting a signal from the sensor that tells it how fast the left rear wheel is spinning.
The vehicle's computer system monitors the wheel speed sensors to ensure accurate data for systems like ABS. A 'circuit low' code indicates a problem with the electrical signal from the sensor.
C050E is a chassis-related code indicating a low voltage or poor signal from the left rear wheel speed sensor. This sensor is crucial for systems like ABS and traction control, which rely on accurate wheel speed data to function correctly.
• ABS warning light on
• Traction control warning light on
• Inconsistent speedometer readings
• Faulty left rear wheel speed sensor
• Damaged wiring or connectors
• Corroded electrical connections
ABS: Anti-lock Braking System
Traction Control: A system that prevents wheel spin during acceleration
• Inspect the left rear wheel speed sensor and wiring for damage.
• Check the electrical connections for corrosion or looseness.
• Use a multimeter to test the sensor's voltage and resistance.
• Replace the faulty wheel speed sensor.
• Repair or replace damaged wiring or connectors.
• Clean and secure electrical connections.
• Multimeter
• Socket set
• Screwdriver set
$100 - $300
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect wheel speed sensors and wiring.
• Keep electrical connections clean and secure.
• Avoid driving through deep water which can damage sensors.
Sensor Issue
• Do not ignore warning lights on the dashboard.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent sensor issues.
Check with the vehicle manufacturer for warranty coverage on sensors and electrical components.
Wheel speed sensor issues are common in vehicles with advanced ABS and traction control systems due to their reliance on accurate wheel speed data.
Moderate – While the vehicle is still drivable, it may have compromised safety features like ABS and traction control.
Operating a vehicle with compromised ABS or traction control can increase the risk of accidents, especially in adverse conditions.
• Vehicle at rest and ignition on
• Vehicle in motion to test sensor signal
The left rear wheel speed sensor is located near the wheel hub of the left rear wheel.
Q: Can I drive with a C050E code?
A: Yes, but it's not recommended as safety features like ABS may not function properly.
Q: How can I prevent wheel speed sensor issues?
A: Regular maintenance and avoiding harsh environmental conditions can help prevent issues.
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.