← View Generic B1246 Guide Severity: High

🚗 Vehicle-Specific Guide

This guide is customized for your 2019 Ford F150 PICKUP

B1246: B1246: Immobilizer System Malfunction

on 2019 Ford F150 PICKUP

Fix Cost

$100 - $500

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

Your Vehicle

2019 Ford

F150 PICKUP

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Important for 2019 Ford F150 PICKUP Owners

Before starting repairs, verify which engine your 2019 Ford F150 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B1246 Mean on 2019 Ford F150 PICKUP?

The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is typically set when the immobilizer system is not functioning correctly, preventing the vehicle from starting.

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Symptoms

• Vehicle will not start
• may have a flashing immobilizer light on the dashboard

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Common Causes

• Faulty immobilizer module
• faulty key fob
• low battery in key fob
• incorrect key fob programming

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How to Fix B1246 on 2019 Ford F150 PICKUP

1. Check the key fob battery level and replace if necessary. 2. Try reprogramming the key fob. 3. Check the immobilizer module for any signs of physical damage or corrosion. 4. Replace the immobilizer module if necessary.

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Parts for 2019 Ford F150 PICKUP

immobilizer module Shop ↗ key fob Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1246

B1244 Sequential Code

💡 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