Engine-CodesInfiniti – P1615 Infiniti

P1615 Infiniti Code - Difference of Key

Quick Answer

The P1615 Infiniti code indicates a difference of key error in the vehicle's anti-theft system. Common causes include Faulty key fob, Key fob battery issue, Ignition system malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1615 Infiniti indicates Difference of Key.
Common causes
Common causes include Faulty key fob, Key fob battery issue, Ignition system malfunction.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P1615 Infiniti Description

The P1615 Infiniti code indicates a difference of key error in the vehicle's anti-theft system. This means that there is a discrepancy between the key being used to start the car and the key code stored in the vehicle's computer. This can lead to the vehicle not starting or experiencing issues with the ignition system.

OBDII Code P1615 Infiniti - Difference of Key
P1615 Infiniti Code - Difference of Key

Common Causes of P1615 Infiniti

  1. Faulty key fob
  2. Key fob battery issue
  3. Ignition system malfunction
  4. Wiring or connection problems
  5. Anti-theft system malfunction

Symptoms of P1615 Infiniti

  1. Vehicle not starting
  2. Intermittent starting issues
  3. Engine stalling
  4. Anti-theft system activation
  5. Difficulty staying running

How to Fix P1615 Infiniti

  1. Replace key fob battery: Start by replacing the battery in the key fob to ensure it is transmitting the correct code.
  2. Check wiring and connections: Inspect the wiring and connections related to the ignition system and anti-theft system to ensure there are no loose or damaged components.
  3. Reset anti-theft system: Resetting the vehicle's anti-theft system may resolve the discrepancy between the key and the stored code.
  4. Replace key fob: If the key fob itself is faulty, it may need to be replaced to ensure proper communication with the vehicle's computer.
  5. Inspect ignition system: If the issue persists, a thorough inspection of the ignition system may be necessary to identify any underlying problems.

Cost to Fix P1615 Infiniti

The cost of repairing a P1615 Infiniti code can vary depending on the root cause of the issue. Generally, replacing a key fob battery can cost around $5-$20, while a new key fob can range from $50-$200. If the issue is related to the ignition system or wiring, the repair costs can increase significantly, potentially ranging from $100-$500 or more. Labor costs at auto repair shops typically range from $80-$150 per hour, but can vary based on location and other factors. It's recommended to consult with a mechanic to get a more accurate estimate for your specific situation.

Tech Notes for P1615 Infiniti

This code is usually triggered when a not registered or damaged key is used to start the engine. When the starting operation is carried out five or more times consecutively with the same unregistered key, the system will lock.

If the problem occurs try disconnecting the car battery for about 30 minutes and then try starting the engine with a known registered key. If the problem persists you have to have the dealer erase the code and reprogram the keys again.

When is the Code Detected?

IMMU can receive the key ID signal but the result of ID verification between key ID and IMMU is not good.

Need more information about the P1615 Infiniti code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1615 Infiniti Code

No Frequently Asked Questions about P1615 Infiniti Code found.

Discuss the causes and fixes for P1615 Infiniti OBDII Code

  • I replaced the ignition switch and tried to replace the mobiliser but still not turning on i am trying to start the car without having to go to dealer to reprogram but i was hoping to fix and program myself i would like to get help and learn how to do this procedure without going to dealer extremes

  • Unfortunately, you have to have the dealer or locksmith reprogram the keys for you.
    Why did you replaced the switch and immobilizer?