OBD Guide
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B1150

Left Side Curtain Air Bag Module Open

B1150 is an OBD-II diagnostic trouble code meaning: Left Side Curtain Air Bag Module Open. Common causes: broken wiring harness (harness) to the curtain module, poor contact in connectors. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag error message on dashboard
  • The air bag indicator is flashing
  • Disabling the entire airbag system

Causes

  • Broken wiring harness (harness) to the curtain module
  • Poor contact in connectors
  • Malfunction of the side curtain module (roof panel)
  • Damage to the wheel ring in the steering wheel

How to Fix

  1. Carry out diagnostics with a scanner to confirm code B1150
  2. Visually inspect the wiring harness and connectors of the left curtain module
  3. Check continuity with a multimeter
  4. Replace damaged wires or connectors
  5. If necessary, replace the side curtain module
  6. Clear the error and check the system operation

Related codes

B1151B1149B1152

FAQ

What does the B1150 code mean?

B1150 is an OBD-II diagnostic trouble code that indicates: Left Side Curtain Air Bag Module Open

What causes a B1150 error code?

The most common causes of B1150 include: Broken wiring harness (harness) to the curtain module; Poor contact in connectors; Malfunction of the side curtain module (roof panel); Damage to the wheel ring in the steering wheel.

How do I fix a B1150 diagnostic trouble code?

To fix B1150: Carry out diagnostics with a scanner to confirm code B1150. Visually inspect the wiring harness and connectors of the left curtain module. Check continuity with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1150?

Do not drive — repair immediately

How much does it cost to fix B1150?

The estimated repair cost for B1150 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat