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P1614 Infiniti Code - Chain of IMMU-KEY

Quick Answer

The P1614 Infiniti code relates to an issue with the chain of communication between the Immobilizer Control Module (IMMU) and the key. Common causes include Faulty key fob, Malfunctioning Immobilizer Control Module (IMMU), Wiring issues in the IMMU-KEY circuit. 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
P1614 Infiniti indicates Chain of IMMU-KEY.
Common causes
Common causes include Faulty key fob, Malfunctioning Immobilizer Control Module (IMMU), Wiring issues in the IMMU-KEY circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P1614 Infiniti Description

The P1614 Infiniti code relates to an issue with the chain of communication between the Immobilizer Control Module (IMMU) and the key. The IMMU is responsible for recognizing the key's unique code and allowing the vehicle to start. When this chain is disrupted, it can lead to starting problems and even prevent the vehicle from starting altogether.

OBDII Code P1614 Infiniti - Chain of IMMU-KEY
P1614 Infiniti Code - Chain of IMMU-KEY

Common Causes of P1614 Infiniti

  1. Faulty key fob
  2. Malfunctioning Immobilizer Control Module (IMMU)
  3. Wiring issues in the IMMU-KEY circuit
  4. Low battery in the key fob

Symptoms of P1614 Infiniti

  1. Engine cranks but does not start
  2. Engine stalls shortly after starting
  3. Key fob not recognized by the vehicle
  4. Immobilizer warning light illuminated on the dashboard

How to Fix P1614 Infiniti

  1. Inspect the key fob for any visible damage or low battery. Replace the key fob if necessary.
  2. Check the wiring in the IMMU-KEY circuit for any breaks or loose connections. Repair or replace any damaged wiring.
  3. Use a diagnostic tool to reset the Immobilizer Control Module and reprogram the key fob to the vehicle.
  4. If the IMMU is found to be faulty, replace it with a new unit.
  5. Test the vehicle to ensure that the P1614 code has been resolved and that the engine starts without any issues.

Cost to Fix P1614 Infiniti

The cost of repairing the P1614 Infiniti code can vary depending on the specific cause of the issue. Replacing a key fob can range from $50 to $200, while replacing the Immobilizer Control Module can cost between $200 and $500. Labor costs can add an additional $100 to $300 to the total repair bill. It is important to note that these are rough estimates, and actual costs may vary based on the location, vehicle make and model, and labor rates of the repair shop. It is recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.

What does this mean?

Tech Notes for P1614 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 cannot receive the key ID signal.

Need more information about the P1614 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 P1614 Infiniti Code

1. What is OBDII code P1614 in Infiniti vehicles related to?

The OBDII code P1614 in Infiniti vehicles is related to the Chain of IMMU-KEY, indicating an issue with the communication between the immobilizer system and the key.

2. What are common symptoms of OBDII code P1614 in an Infiniti car?

Common symptoms of OBDII code P1614 in an Infiniti car may include difficulty starting the vehicle, the engine not turning over, or the car not recognizing the key.

3. What are possible causes of OBDII code P1614 in an Infiniti?

Possible causes of OBDII code P1614 in an Infiniti include a faulty key fob, issues with the immobilizer unit, wiring problems, or a malfunction in the key recognition system.

4. How can I diagnose the OBDII code P1614 in my Infiniti?

To diagnose OBDII code P1614 in your Infiniti, you can use an OBDII scanner to read the trouble codes, check the key fob battery, inspect the wiring connections, and have the immobilizer system tested by a professional.

5. Can I still drive my Infiniti with OBDII code P1614 present?

It is not recommended to drive your Infiniti with OBDII code P1614 present, as it may lead to starting issues or potential immobilization of the vehicle.

6. How can I clear the OBDII code P1614 in my Infiniti?

Clearing the OBDII code P1614 in your Infiniti can be done using an OBDII scanner to reset the fault codes after addressing the underlying issue with the immobilizer system.

7. Is it necessary to replace the key fob for OBDII code P1614 in an Infiniti?

Replacing the key fob may be necessary if it is found to be the cause of OBDII code P1614 in your Infiniti after diagnostics have been performed.

8. Can a DIY enthusiast repair OBDII code P1614 in an Infiniti?

While some simple checks and inspections can be done by a DIY enthusiast, repairing OBDII code P1614 in an Infiniti may require specialized tools and knowledge, so it is recommended to seek professional help.

9. How much does it cost to repair OBDII code P1614 in an Infiniti?

The cost to repair OBDII code P1614 in an Infiniti can vary depending on the exact cause of the issue, but it may involve expenses for diagnostic tests, parts replacement, and labor fees.

10. What should I do if OBDII code P1614 keeps coming back in my Infiniti?

If OBDII code P1614 keeps coming back in your Infiniti after clearing it, it is important to have a thorough diagnostic check performed by a professional to identify and address the root cause of the problem.

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