OBD Guide
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B1811

Short In Driver Side Squib 2nd Step Circuit

B1811 is an OBD-II diagnostic trouble code meaning: Short In Driver Side Squib 2nd Step Circuit. Common causes: wiring harness damage, short circuit in the squib. Estimated repair cost: $56–167.

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

Symptoms

  • SRS/Airbag light is on
  • The airbag may not deploy in an accident.
  • Error B1811 is stored in the control unit memory

Causes

  • Wiring harness damage
  • Short circuit in the squib
  • SRS control unit malfunction
  • Oxidation of contacts
  • Mechanical damage to the airbag

How to Fix

  1. Diagnose the SRS system using a scanner
  2. Check the integrity of the wiring harness
  3. Check squib resistance
  4. Inspect contacts for oxidation
  5. If necessary, replace the squib or wiring harness.
  6. Reset the error and check the system

Related codes

B1800B1810B1820

FAQ

What does the B1811 code mean?

B1811 is an OBD-II diagnostic trouble code that indicates: Short In Driver Side Squib 2nd Step Circuit

What causes a B1811 error code?

The most common causes of B1811 include: Wiring harness damage; Short circuit in the squib; SRS control unit malfunction; Oxidation of contacts.

How do I fix a B1811 diagnostic trouble code?

To fix B1811: Diagnose the SRS system using a scanner. Check the integrity of the wiring harness. Check squib resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1811?

Do not drive — repair immediately

How much does it cost to fix B1811?

The estimated repair cost for B1811 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat