← View Generic B1654 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2014 Nissan SENTRA
B1654: B1654: Immobilizer System Malfunction
on 2014 Nissan SENTRA
Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2014 Nissan
SENTRA
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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 B1654 Mean on 2014 Nissan SENTRA?
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 B1654 on 2014 Nissan SENTRA
1. Check key fob battery level and replace if necessary. 2. Check key fob programming and reprogram if necessary. 3. Replace immobilizer module if faulty.
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Need Maintenance Info for Your SENTRA?
Get oil capacity, filter specs, and torque settings for your specific 2014 Nissan SENTRA.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B1654
B1652
Sequential Code
B1652: Seat Position Sensor Circuit Malfunction
Medium
B1653
Sequential Code
B1653: Body System Code for Malfunctioning Headlight
Medium
B1655
Sequential Code
B1655: Audio System Fault
Medium
B1656
Sequential Code
B1656: 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