B2425 Code: Meaning, Symptoms, Causes & Fix

Overview

Code B2425 indicates a fault in Remote Keyless Entry Out of Synchronization, typically within body electronics and comfort modules.

Symptoms

feature inoperative intermittently
module resets or glitches
related warning lamp illuminated

Common causes

Component failure in the monitored system affecting remote keyless entry out of synchronization
Electrical fault in the affected circuit
Connector pin damage/corrosion or harness stress near related components

How to diagnose B2425

Confirm B2425 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to remote keyless entry out of synchronization 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 B2425

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

Can you drive with B2425?

The vehicle is often drivable with B2425, 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 remote keyless entry out of synchronization circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify B2425 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 B2425

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.

B2425 in common vehicles

B2425 appears across makes such as Nissan, Hyundai, Kia, Volkswagen. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes B2425?

B2425 is commonly set by generic faults affecting remote keyless entry out of synchronization.

How much does it cost to fix B2425?

For B2425, repair costs are typically $90-$400 depending on exact root cause, labor rates, and part quality.

Can I clear B2425 without repair?

You can clear B2425 temporarily, but the code usually returns until the underlying fault is corrected.