← View Generic B2798 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2014 Nissan SENTRA

B2798: B2798: Immobilizer System Malfunction

on 2014 Nissan SENTRA

Fix Cost
$200 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2014 Nissan
SENTRA
⚠️

Important for 2014 Nissan SENTRA Owners

Before starting repairs, verify which engine your 2014 Nissan SENTRA has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B2798 Mean on 2014 Nissan SENTRA?

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

Symptoms

  • • Vehicle will not start
  • • or will not run
  • • due to immobilizer system malfunction
🔍

Common Causes

  • • Faulty immobilizer system module
  • • faulty key fob
  • • low battery voltage
  • • or incorrect key fob programming
🛠️

How to Fix B2798 on 2014 Nissan SENTRA

1. Check and replace the immobilizer system module if faulty. 2. Check and replace the key fob if faulty. 3. Check and maintain proper battery voltage. 4. Re-program the key fob if necessary.

🔧

Need Maintenance Info for Your SENTRA?

Get oil capacity, filter specs, and torque settings for your specific 2014 Nissan SENTRA.

View 2014 Nissan SENTRA Specs

Parts for 2014 Nissan SENTRA

Immobilizer system module Shop ↗ Key fob Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2014 Nissan SENTRA

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B2798

B2796 Sequential Code

B2796: Seat Position Sensor Circuit Malfunction

Medium
B2797 Sequential Code

B2797: Exterior Lighting Malfunction

Medium
B2799 Sequential Code

B2799: Audio System Malfunction

Medium
B2800 Sequential Code

B2800: Airbag System Fault

High

💡 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