OBD Guide
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B1900

Short in Front Pretensioner Squib Right Circuit

B1900 is an OBD-II diagnostic trouble code meaning: Short in Front Pretensioner Squib Right Circuit. Common causes: wiring harness damage, pretensioner squib malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • SRS does not activate in an accident
  • Error B1900 in diagnostic memory

Causes

  • Wiring harness damage
  • Pretensioner squib malfunction
  • Problems with the SRS control unit
  • Short circuit in the circuit

How to Fix

  1. Check wiring harness for damage
  2. Check the resistance of the pretensioner squib
  3. Check the SRS control unit for errors
  4. Replace damaged components
  5. Reset the error and check the system

Related codes

B1901B1902B1903

FAQ

What does the B1900 code mean?

B1900 is an OBD-II diagnostic trouble code that indicates: Short in Front Pretensioner Squib Right Circuit

What causes a B1900 error code?

The most common causes of B1900 include: Wiring harness damage; Pretensioner squib malfunction; Problems with the SRS control unit; Short circuit in the circuit.

How do I fix a B1900 diagnostic trouble code?

To fix B1900: Check wiring harness for damage. Check the resistance of the pretensioner squib. Check the SRS control unit for errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1900?

Do not drive — repair immediately

How much does it cost to fix B1900?

The estimated repair cost for B1900 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat