B0091 — Left Side Restraints Sensor 1

What Does B0091 Mean?

B0091 is a diagnostic trouble code indicating: Left Side Restraints Sensor 1. This code relates to the body electrical system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of B0091

⚠️ Check Engine Light (MIL) illuminated
⚠️ Left Side Restraints Sensor 1 not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Interior or exterior lighting malfunction

Common Causes

🔍 Faulty Left Side Restraints Sensor 1
🔍 Wiring or connector issue in Left Side Restraints Sensor 1 circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does B0091 mean?

B0091 indicates: Left Side Restraints Sensor 1. The vehicle's computer has detected that the Left Side Restraints Sensor 1 is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code B0091?

Yes, B0091 is generally safe to drive with in the short term. However, it should still be addressed to pass emissions testing and prevent potential secondary issues.

How much does it cost to fix B0091?

Repair costs for B0091 typically range from $80 to $300, 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 Left Side Restraints Sensor 1 and related wiring
🔧 Replace faulty Left Side Restraints Sensor 1

1
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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.

B0091: Left Side Restraints Sensor 1