← Back to Search Severity: Medium

B1958

B1958: Immobilizer System Malfunction

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B1958 Mean?

The immobilizer system has detected a malfunction, preventing the engine from starting. This code is often caused by a faulty immobilizer sensor, wiring issue, or incorrect key fob battery.
⚠️

Symptoms

  • Engine won't start
  • dashboard warning light is illuminated
🔍

Common Causes

  • Faulty immobilizer sensor
  • wiring issue
  • incorrect key fob battery
  • faulty key fob
  • or immobilizer system malfunction
Fix Guide
🛠️

Possible Solutions

1. Check the key fob battery and replace it if necessary. 2. Inspect the immobilizer sensor and wiring for damage or corrosion. 3. Clear the code and test the system. 4. If the issue persists, replace the immobilizer sensor or key fob.

🚗

Fixing this on your car?

Get a vehicle-specific repair guide with exact parts, oil specs, and torque settings for your make and model.

Find My Car's Guide

🚙 Get Vehicle-Specific Fix Guide

Select your vehicle to see a customized repair guide with exact parts and specifications:

Common Questions About B1958

Q

Can I drive with code B1958?

A

You can drive for a short time, but should address code B1958 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B1958?

A

The estimated repair cost for code B1958 is between $50 and $200. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.

👨‍🔧

Need a Pro?

Complex codes like B1958 can be tricky. Don't risk it if you're unsure.

📋

Recommended Tool

Essential for DIY

Professional OBD2 Scanner

Read & clear codes, view live data, and reset service lights yourself.

View Best Sellers ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B1958

💡 Why These Codes Are Related:

  • Similar Issues: Same root cause or component failure
  • Related Problems: Often occur together due to system interactions
  • Sequential Codes: Progressive failure stages or multiple sensors
  • Same System: Components within the same automotive system