OBD Guide
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B1901

Open in Front Pretensioner Squib Right Circuit

B1901 is an OBD-II diagnostic trouble code meaning: Open in Front Pretensioner Squib Right Circuit. Common causes: broken wiring harness, faulty squib. Estimated repair cost: $56–167.

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

Symptoms

  • SRS indicator is on
  • Pretensioners do not work in an accident
  • Error B1901 in ECU memory

Causes

  • Broken wiring harness
  • Faulty squib
  • Problems with the SRS control unit
  • Oxidation of contacts

How to Fix

  1. Check the integrity of the wiring harness
  2. Test the resistance of the squib circuit
  3. Check contacts for corrosion
  4. Replace faulty components
  5. Reset OBD-II error

Related codes

B1900B1902B0100

FAQ

What does the B1901 code mean?

B1901 is an OBD-II diagnostic trouble code that indicates: Open in Front Pretensioner Squib Right Circuit

What causes a B1901 error code?

The most common causes of B1901 include: Broken wiring harness; Faulty squib; Problems with the SRS control unit; Oxidation of contacts.

How do I fix a B1901 diagnostic trouble code?

To fix B1901: Check the integrity of the wiring harness. Test the resistance of the squib circuit. Check contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1901?

Do not drive — repair immediately

How much does it cost to fix B1901?

The estimated repair cost for B1901 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat