C0130 moderate

Right Rear Wheel Speed Sensor Circuit Erratic

The C0130 code means the vehicle's onboard diagnostic system has detected: Right Rear Wheel Speed Sensor Circuit Erratic. This is a moderate severity code.

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Keep driving?: Yes, but fix soon
DIY difficulty: moderate
Estimated cost: $80 - $400 (parts and labor)

Read ABS Codes

BlueDriver Bluetooth Pro Scanner

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Read ABS Codes

LAUNCH CRP123X (Reads ABS + Chassis)

Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.

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Common Symptoms

ABS warning light on
Right rear brake locking during ABS event
Traction control engaging unexpectedly
Stability control warning
Rear braking feel uneven

Probable Causes (Ranked by Likelihood)

Contaminated right rear tone ring Very High
Cracked or damaged right rear speed sensor High
Right rear wheel bearing play Moderate
Sensor wiring damage from road debris Low

Step-by-Step Diagnostic Procedure

Monitor all wheel speed sensors during test drive
Inspect right rear tone ring for debris or damage
Check right rear sensor physical condition
Test right rear wheel bearing for play
Inspect wiring along rear axle or suspension

Frequently Asked Questions

Are rear wheel speed sensors different on trucks?

On trucks with a solid rear axle, the tone ring may be on the axle shaft inside the differential or on the brake rotor. This differs from independent rear suspension vehicles where it is at the hub.

Can a rear differential service affect the tone ring?

If the tone ring is located inside the differential, improper reassembly during a differential service could damage or dislodge it, causing erratic speed readings.

How do I prevent tone ring contamination?

Regular undercarriage washing, especially after winter driving with road salt, helps prevent metallic debris buildup on the tone ring that causes erratic sensor readings.