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C0300 — Rear Speed Sensor

Rear vehicle speed sensor in differential or rear axle has malfunction.

Severity: HighRepair: $50-$300Difficulty: Medium

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Common symptoms of C0300

Common causes of C0300

Repair cost & difficulty

Typical cost to fix C0300: $50-$300 · Difficulty: Medium

Pro tip: Check for differential fluid on sensor — leaking diff seals are common cause.

Vehicles commonly affected

Trucks and SUVs with rear diff sensor

Related trouble codes

P0500

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.