OBD Guide
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B1758

Seat Driver Rear Down Circuit Open

B1758 is an OBD-II diagnostic trouble code meaning: Seat Driver Rear Down Circuit Open. Common causes: broken or damaged wiring harness, faulty airbag squib. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • The passive restraint system is not activated during the test
  • Error B1758 persists after scanning

Causes

  • Broken or damaged wiring harness
  • Faulty airbag squib
  • Corroded or oxidized connectors
  • Problems with the airbag control module

How to Fix

  1. Conduct a visual inspection of the wiring harness for damage.
  2. Check the resistance of the airbag squib
  3. Clean connector contacts from oxidation
  4. Scan the airbag module for additional errors
  5. Replace faulty components if necessary

Related codes

B1757B1759B1760

FAQ

What does the B1758 code mean?

B1758 is an OBD-II diagnostic trouble code that indicates: Seat Driver Rear Down Circuit Open

What causes a B1758 error code?

The most common causes of B1758 include: Broken or damaged wiring harness; Faulty airbag squib; Corroded or oxidized connectors; Problems with the airbag control module.

How do I fix a B1758 diagnostic trouble code?

To fix B1758: Conduct a visual inspection of the wiring harness for damage.. Check the resistance of the airbag squib. Clean connector contacts from oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1758?

Do not drive — repair immediately

How much does it cost to fix B1758?

The estimated repair cost for B1758 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat