OBD Guide

U0142

Lost Communication With Body Control Module B

U0142 is an OBD-II diagnostic trouble code meaning: Lost Communication With Body Control Module B. Common causes: open or short circuit in wiring harness, oxidized contacts in connectors. Estimated repair cost: $9โ€“556.

Severity
๐Ÿ”ด High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$9โ€“556 (est.)

Symptoms

  • Lack of access to some vehicle functions
  • Interior or dashboard lighting not working
  • Problems with central locking
  • Errors in the operation of power windows
  • The alarm may not work correctly

Causes

  • Open or short circuit in wiring harness
  • Oxidized contacts in connectors
  • Body Control Module (BCM) Malfunction
  • Module power problems
  • Damage to the CAN network interface

How to Fix

  1. Check the integrity of the wiring harness between the modules
  2. Clean and check all contacts in connectors
  3. Check BCM power and ground
  4. Scan all modules for additional errors
  5. Replace the body control module if necessary

Related codes

Error U0142 by Vehicle Brand

FAQ

What does the U0142 code mean?

U0142 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Body Control Module B

What causes a U0142 error code?

The most common causes of U0142 include: Open or short circuit in wiring harness; Oxidized contacts in connectors; Body Control Module (BCM) Malfunction; Module power problems.

How do I fix a U0142 diagnostic trouble code?

To fix U0142: Check the integrity of the wiring harness between the modules. Clean and check all contacts in connectors. Check BCM power and ground. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0142?

Yes, but get it checked soon

How much does it cost to fix U0142?

The estimated repair cost for U0142 is $9โ€“556. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version ยท NationStat