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Accident Estimate
Airbag / SRSCritical⚠️ Professional Recommended

B0100

Rollover Recovery Function Malfunction

The rollover sensor or its recovery function circuit has failed self-test.

SeverityCritical
CategoryAirbag / SRS
Est. Repair Cost$250-$600
Code TypeBody
DIY RepairProfessional

⚡ Common Causes

  • ›Faulty rollover sensor
  • ›Damaged sensor wiring
  • ›SRS module internal fault
  • ›Vehicle previously in a rollover event

⚠️ Symptoms

  • ›Airbag warning light on
  • ›Curtain airbags and pretensioners may not deploy correctly in a rollover

✅ How to Fix — Step by Step

  • Step 1:Scan SRS system for codes
  • Step 2:Inspect rollover sensor and wiring
  • Step 3:Replace sensor or SRS module as needed

🔧 Diagnostic Tools Required

Using the correct diagnostic tools helps identify the root cause of B0100 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: If the vehicle has a history of a rollover accident, the SRS module itself likely needs replacement, not just the sensor.

Repair Cost Estimate

Full Repair Estimate
$250-$600
DIY Possible?
PRO
Severity
Critical

Frequently Asked Questions

What does OBD2 code B0100 mean?+
B0100 stands for Rollover Recovery Function Malfunction. The rollover sensor or its recovery function circuit has failed self-test.
What causes code B0100?+
Faulty rollover sensor; Damaged sensor wiring; SRS module internal fault; Vehicle previously in a rollover event
How do I fix code B0100?+
Scan SRS system for codes; Inspect rollover sensor and wiring; Replace sensor or SRS module as needed
How much does it cost to fix B0100?+
Estimated repair cost for B0100 is $250-$600.
Is B0100 DIY-friendly?+
B0100 typically requires professional equipment and a qualified mechanic.

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