C0045Medium urgency

Left Rear Wheel Speed Sensor Circuit

Chassis · ABS/Traction Control

⚠️ Fix soon — ABS and stability control impaired.

What this means

The left rear wheel speed sensor circuit has failed. All four wheel speed sensors are required for proper ABS, traction control, and electronic stability control.

Likely causes

Failed wheel speed sensorMost common
Wiring damaged by debris or rustMost common
Damaged reluctor ringCommon

Estimated repair cost

Wheel speed sensor replacement$100 – $300

Wiring repair$75 – $250

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Frequently asked questions

What does C0045 mean?

The left rear wheel speed sensor circuit has failed. All four wheel speed sensors are required for proper ABS, traction control, and electronic stability control.

Is C0045 serious?

Fix soon — ABS and stability control impaired.

How much does it cost to fix C0045?

Repair costs for C0045 range from $100 – $300 depending on the root cause and your vehicle.

Can I drive with C0045?

You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.