OBD Guide
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B1971

Inadvertent Power Fault

B1971 is an OBD-II diagnostic trouble code meaning: Inadvertent Power Fault. Common causes: open or short circuit in the srs wiring harness, corrosion or 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

  • SRS indicator is on
  • Disabling airbags
  • Disabling seat belt pretensioners

Causes

  • Open or short circuit in the SRS wiring harness
  • Corrosion or poor contact in connectors
  • SRS control module malfunction
  • Problems with squibs in the system
  • Incorrect voltage in the power circuit

How to Fix

  1. Check the integrity of the SRS wiring harness
  2. Inspect connectors and contacts for corrosion or damage
  3. Check the SRS control module for errors.
  4. Check the voltage in the security system power supply circuit
  5. If necessary, replace damaged components (harness, module, squibs)

Related codes

B1921B1970B1972

FAQ

What does the B1971 code mean?

B1971 is an OBD-II diagnostic trouble code that indicates: Inadvertent Power Fault

What causes a B1971 error code?

The most common causes of B1971 include: Open or short circuit in the SRS wiring harness; Corrosion or poor contact in connectors; SRS control module malfunction; Problems with squibs in the system.

How do I fix a B1971 diagnostic trouble code?

To fix B1971: Check the integrity of the SRS wiring harness. Inspect connectors and contacts for corrosion or damage. Check the SRS control module for errors.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1971?

Do not drive — repair immediately

How much does it cost to fix B1971?

The estimated repair cost for B1971 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat