OBD Guide
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U149D

LBSS Receives An Implausible Message From The BCM

U149D is an OBD-II diagnostic trouble code meaning: LBSS Receives An Implausible Message From The BCM. Common causes: body control module (bcm) malfunction, damage to the wiring harness between lbss and bcm. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect lighting operation
  • Problems with central locking
  • Alarm errors
  • Flashing warning lights on the dashboard
  • Malfunctions of the car's electronic systems

Causes

  • Body Control Module (BCM) Malfunction
  • Damage to the wiring harness between LBSS and BCM
  • Poor contact in connectors
  • Software error in LBSS or BCM module
  • Short circuit in communication circuit

How to Fix

  1. Check connections and wiring harness between LBSS and BCM
  2. Scan the BCM for errors
  3. Update LBSS and BCM module software
  4. Check power and ground of modules
  5. Repair only from an authorized dealer

Related codes

U149CU149EU149F

FAQ

What does the U149D code mean?

U149D is an OBD-II diagnostic trouble code that indicates: LBSS Receives An Implausible Message From The BCM

What causes a U149D error code?

The most common causes of U149D include: Body Control Module (BCM) Malfunction; Damage to the wiring harness between LBSS and BCM; Poor contact in connectors; Software error in LBSS or BCM module.

How do I fix a U149D diagnostic trouble code?

To fix U149D: Check connections and wiring harness between LBSS and BCM. Scan the BCM for errors. Update LBSS and BCM module software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U149D?

Yes, but get it checked soon

How much does it cost to fix U149D?

The estimated repair cost for U149D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat