OBD Guide
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B1C3A

1st Row Driver Retractor Tensioner Circuit Open

B1C3A is an OBD-II diagnostic trouble code meaning: 1st Row Driver Retractor Tensioner Circuit Open. Common causes: damage to pretensioner circuit wires or connectors, malfunction of the pretensioner itself. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The SRS indicator on the dashboard is on
  • pretensioner does not work when checking the system
  • error persists after reset by OBD-II scanner

Causes

  • Damage to pretensioner circuit wires or connectors
  • malfunction of the pretensioner itself
  • problem with SRS control unit
  • contact corrosion

How to Fix

  1. visual inspection of the wiring harness and connectors
  2. checking pretensioner chain resistance
  3. diagnostics of the SRS control unit
  4. replacing damaged wires or components
  5. reset error and recheck

Related codes

B1C39B1C3BB1C3C

FAQ

What does the B1C3A code mean?

B1C3A is an OBD-II diagnostic trouble code that indicates: 1st Row Driver Retractor Tensioner Circuit Open

What causes a B1C3A error code?

The most common causes of B1C3A include: Damage to pretensioner circuit wires or connectors; malfunction of the pretensioner itself; problem with SRS control unit; contact corrosion.

How do I fix a B1C3A diagnostic trouble code?

To fix B1C3A: visual inspection of the wiring harness and connectors. checking pretensioner chain resistance. diagnostics of the SRS control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1C3A?

Do not drive — repair immediately

How much does it cost to fix B1C3A?

The estimated repair cost for B1C3A is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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