B2142 Code: Meaning, Symptoms, Causes & Fix

Overview

Code B2142 indicates a fault in NVM TIC Failure, typically within body electronics and comfort modules.

Symptoms

module resets or glitches
feature inoperative intermittently
battery draw complaints

Common causes

Electrical fault in the affected circuit affecting nvm tic failure
Control module logic or calibration issue
Connector pin damage/corrosion or harness stress near related components

How to diagnose B2142

Confirm B2142 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to nvm tic failure for obvious defects.
Use freeze-frame and live data to isolate whether the issue is electrical, mechanical, or control logic.
Check for related DTCs to identify the root-cause chain before replacing parts.
After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code B2142

Low: This code is low to moderate severity in most cases, but diagnosis is still recommended to avoid recurring warnings.

Can you drive with B2142?

The vehicle is often drivable with B2142, but plan a repair window to prevent repeat faults.

If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.

How to fix it (step-by-step)

Repair obvious wiring/connector faults first to prevent repeat parts replacement.
Address the root fault mode (generic) in the nvm tic failure circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify B2142 remains cleared under the conditions that originally set the code.

Fix options

Inspect circuit and connector condition.
Test component operation and replace if faulty.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$90-$400

Common mistakes when diagnosing B2142

Replacing parts without verifying voltage, ground, and signal integrity first.
Ignoring related stored/pending codes that indicate upstream faults.
Skipping post-repair verification drive cycle and readiness checks.

B2142 in common vehicles

B2142 appears across makes such as Mazda, Subaru, Lexus, Jeep. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes B2142?

B2142 is commonly set by generic faults affecting nvm tic failure.

How much does it cost to fix B2142?

For B2142, repair costs are typically $90-$400 depending on exact root cause, labor rates, and part quality.

Can I clear B2142 without repair?

You can clear B2142 temporarily, but the code usually returns until the underlying fault is corrected.