OBD Guide
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B1838

Short to Positive in Curtain Shield Squib Left Circuit

B1838 is an OBD-II diagnostic trouble code meaning: Short to Positive in Curtain Shield Squib Left Circuit. Common causes: wiring harness damage, short circuit to positive in the circuit. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • SRS malfunction lamp is on
  • Security error message on display
  • Side curtain airbag malfunction during testing

Causes

  • Wiring harness damage
  • Short circuit to positive in the circuit
  • Connector pin corrosion
  • Squib malfunction
  • Problems with the SRS control unit

How to Fix

  1. Conduct a visual inspection of the wiring harness for damage.
  2. Check the resistance of the squib (should be within 2-3 Ohms)
  3. Inspect connector contacts for corrosion
  4. Check the circuit for short circuit to positive
  5. If necessary, replace the squib or wiring harness.
  6. Reset the error and check the system

Related codes

B1839B1840B1841

FAQ

What does the B1838 code mean?

B1838 is an OBD-II diagnostic trouble code that indicates: Short to Positive in Curtain Shield Squib Left Circuit

What causes a B1838 error code?

The most common causes of B1838 include: Wiring harness damage; Short circuit to positive in the circuit; Connector pin corrosion; Squib malfunction.

How do I fix a B1838 diagnostic trouble code?

To fix B1838: Conduct a visual inspection of the wiring harness for damage.. Check the resistance of the squib (should be within 2-3 Ohms). Inspect connector contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1838?

Yes, but get it checked soon

How much does it cost to fix B1838?

The estimated repair cost for B1838 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat