OBD Guide
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B2854

Implausible Data Received From AHBM

B2854 is an OBD-II diagnostic trouble code meaning: Implausible Data Received From AHBM. Common causes: damage to the wiring harness to the ahbm module, ahbm module malfunction. 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
  • Restraint system inactive
  • The error may be accompanied by other fault codes

Causes

  • Damage to the wiring harness to the AHBM module
  • AHBM module malfunction
  • Poor contact in the module connector
  • Software failure in the control unit

How to Fix

  1. Conduct diagnostics of the passive safety system
  2. Check the integrity of the wiring harness to the AHBM module
  3. Inspect connectors for oxidation or damage
  4. If necessary, replace the AHBM module
  5. Update control unit software

Related codes

B2853B2855B1000

FAQ

What does the B2854 code mean?

B2854 is an OBD-II diagnostic trouble code that indicates: Implausible Data Received From AHBM

What causes a B2854 error code?

The most common causes of B2854 include: Damage to the wiring harness to the AHBM module; AHBM module malfunction; Poor contact in the module connector; Software failure in the control unit.

How do I fix a B2854 diagnostic trouble code?

To fix B2854: Conduct diagnostics of the passive safety system. Check the integrity of the wiring harness to the AHBM module. Inspect connectors for oxidation or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2854?

Do not drive — repair immediately

How much does it cost to fix B2854?

The estimated repair cost for B2854 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat