OBD Guide
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B1187

Short To Ground In Passenger Side Air Bag Module Second Stage Squib Circuit

B1187 is an OBD-II diagnostic trouble code meaning: Short To Ground In Passenger Side Air Bag Module Second Stage Squib Circuit. Common causes: damage to the airbag wiring harness, short circuit in the second stage 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 passive safety system can be disabled
  • Possible errors in other circuits of the SRS system

Causes

  • Damage to the airbag wiring harness
  • Short circuit in the second stage squib
  • SRS control unit malfunction
  • Corrosion of contacts in connectors
  • Mechanical damage to system components

How to Fix

  1. Diagnose the SRS system with a scanner
  2. Visually inspect the wiring harness and connectors
  3. Check the resistance of the squib circuit
  4. Replace damaged components if necessary
  5. Reset errors and check system operation

Related codes

B1185B1186B1188

FAQ

What does the B1187 code mean?

B1187 is an OBD-II diagnostic trouble code that indicates: Short To Ground In Passenger Side Air Bag Module Second Stage Squib Circuit

What causes a B1187 error code?

The most common causes of B1187 include: Damage to the airbag wiring harness; Short circuit in the second stage squib; SRS control unit malfunction; Corrosion of contacts in connectors.

How do I fix a B1187 diagnostic trouble code?

To fix B1187: Diagnose the SRS system with a scanner. Visually inspect the wiring harness and connectors. Check the resistance of the squib circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1187?

Do not drive — repair immediately

How much does it cost to fix B1187?

The estimated repair cost for B1187 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat