B1626 Code: Meaning, Symptoms, Causes & Fix

Overview

Symptoms

• module resets or glitches
• feature inoperative intermittently
• battery draw complaints

Common causes

• Broken terminal inside harness affecting lamp keypad output short circuit to ground
• Disconnected or loose connector
• Connector pin damage/corrosion or harness stress near related components

How to diagnose B1626

1. Confirm B1626 and capture freeze-frame data with a professional scan tool.
2. Inspect wiring, connectors, and grounds related to lamp keypad output short circuit to ground for obvious defects.
3. Use a continuity test from module pin to component to identify opens/high resistance.
4. Check for related DTCs to identify the root-cause chain before replacing parts.
5. After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code B1626

Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.

Can you drive with B1626?

Most vehicles can be driven short-term with B1626, but postpone heavy load/highway driving until repaired.

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

How to fix it (step-by-step)

1. Repair obvious wiring/connector faults first to prevent repeat parts replacement.
2. Address the root fault mode (open) in the lamp keypad output short circuit to ground circuit/system.
3. Apply the required relearn/adaptation procedure if specified by service information.
4. Road-test and verify B1626 remains cleared under the conditions that originally set the code.

Fix options

• Restore continuity and verify pin tension.
• Clear corrosion and protect terminals.
• Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$160-$850

Common mistakes when diagnosing B1626

• 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.

B1626 in common vehicles

B1626 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 B1626?

B1626 is commonly set by open faults affecting lamp keypad output short circuit to ground.

How much does it cost to fix B1626?

For B1626, repair costs are typically $160-$850 depending on exact root cause, labor rates, and part quality.

Can I clear B1626 without repair?

You can clear B1626 temporarily, but the code usually returns until the underlying fault is corrected.

Helpful tools

• Estimate repair cost
• Decode your VIN
• Calculate fuel cost