C0050
Right Rear Wheel Speed Sensor Circuit Malfunction
What it means
C0050. Right Rear Wheel Speed Sensor Circuit Malfunction. This Chevy-enhanced code applies to Silverado, Sierra, Tahoe, Suburban, Colorado.
Findings, check these first
- Failed right rear wheel speed sensor
- Ferrous metallic debris stuck to the magnetic encoder ring on the inboard side of the hub
- Damaged wheel bearing encoder ring from rust or impact
- Chafed rear wheel speed sensor harness near the wheel well or frame
Standard procedure
- Compare right rear wheel speed against the other three corners on a Tech2 or GDS2 during a straight-line drive
- Inspect the magnetic encoder ring for debris and clean it with a dry nylon brush before replacing parts
- Check the sensor harness for chafing and the connector for corrosion
- Measure sensor signal and circuit continuity per GM service information
- Replace the sensor or hub assembly only if the encoder is damaged or the circuit tests faulty
Look up another code
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Sources and review
Review: no source links are recorded for this entry.
Last updated 2026-09-25.
Report a correction for C0050. Include your vehicle, the issue and a source if you have one.
This fault is part of the GM ABS and StabiliTrak family. The GM ABS and StabiliTrak codes guide covers the check order.