B0078 — Third Row Right Seat Belt Pretensioner Deployment Control

What Does B0078 Mean?

B0078 is a diagnostic trouble code indicating: Third Row Right Seat Belt Pretensioner Deployment Control. 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 B0078

⚠️ Check Engine Light (MIL) illuminated
⚠️ Third Row Right Seat Belt Pretensioner Deployment Control not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Interior or exterior lighting malfunction

Common Causes

🔍 Faulty Third Row Right Seat Belt Pretensioner Deployment Control
🔍 Wiring or connector issue in Third Row Right Seat Belt Pretensioner Deployment Control circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does B0078 mean?

B0078 indicates: Third Row Right Seat Belt Pretensioner Deployment Control. The vehicle's computer has detected that the Third Row Right Seat Belt Pretensioner Deployment Control is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code B0078?

Yes, B0078 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 B0078?

Repair costs for B0078 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 Third Row Right Seat Belt Pretensioner Deployment Control and related wiring
🔧 Replace faulty Third Row Right Seat Belt Pretensioner Deployment Control

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

B0078: Third Row Right Seat Belt Pretensioner Deployment Control