OBD Guide
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B27A6

Open In Rear Floor Electrical Key Oscillator Circuit

B27A6 is an OBD-II diagnostic trouble code meaning: Open In Rear Floor Electrical Key Oscillator Circuit. Common causes: break in the wiring harness, oxidation of contacts. Estimated repair cost: $56–167.

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

Symptoms

  • Rear access functions do not work
  • The airbag malfunction indicator is on
  • Problems unlocking/locking doors

Causes

  • Break in the wiring harness
  • Oxidation of contacts
  • Malfunction of the electronic key (oscillator)
  • Damage to connectors

How to Fix

  1. Check the wiring harness for breaks and damage
  2. Inspect contacts for oxidation
  3. Test the electronic key (oscillator)
  4. Check connectors for damage
  5. Replace or repair damaged elements

Related codes

B27A5B27A7B0090

FAQ

What does the B27A6 code mean?

B27A6 is an OBD-II diagnostic trouble code that indicates: Open In Rear Floor Electrical Key Oscillator Circuit

What causes a B27A6 error code?

The most common causes of B27A6 include: Break in the wiring harness; Oxidation of contacts; Malfunction of the electronic key (oscillator); Damage to connectors.

How do I fix a B27A6 diagnostic trouble code?

To fix B27A6: Check the wiring harness for breaks and damage. Inspect contacts for oxidation. Test the electronic key (oscillator). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27A6?

Do not drive — repair immediately

How much does it cost to fix B27A6?

The estimated repair cost for B27A6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat