C065F — Left Rear Wheel Speed Sensor B Circuit/Open

What Does C065F Mean?

C065F is a diagnostic trouble code indicating: Left Rear Wheel Speed Sensor B Circuit/Open. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of C065F

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Left Rear Wheel Speed Sensor B readings
⚠️ Related system operating intermittently
⚠️ ABS or stability control warning light

Common Causes

🔍 Wiring issue in Left Rear Wheel Speed Sensor B circuit (damaged, chafed, or corroded)
🔍 Faulty Left Rear Wheel Speed Sensor B connector or terminal
🔍 Failed Left Rear Wheel Speed Sensor B
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does C065F mean?

C065F indicates: Left Rear Wheel Speed Sensor B Circuit/Open. The vehicle's computer has detected that the Left Rear Wheel Speed Sensor B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code C065F?

Only short distances if absolutely necessary. C065F affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix C065F?

Repair costs for C065F typically range from $100 to $400, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and repair Left Rear Wheel Speed Sensor B wiring and connectors
🔧 Replace faulty Left Rear Wheel Speed Sensor B

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2
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

C065F: Left Rear Wheel Speed Sensor B Circuit/Open