Engine-CodesNissan – P1613 Nissan

P1613 Nissan Code - ECM INT CIRC-IMMU

Quick Answer

The P1613 Nissan code refers to an ECM (Engine Control Module) internal circuit malfunction in the IMMU (Immobilizer Control Unit) system. Common causes include Wiring issues, Faulty connectors, Malfunctioning ECM. 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
P1613 Nissan indicates ECM INT CIRC-IMMU.
Common causes
Common causes include Wiring issues, Faulty connectors, Malfunctioning ECM.
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 07, 2024
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Code P1613 Nissan Description

The P1613 Nissan code refers to an ECM (Engine Control Module) internal circuit malfunction in the IMMU (Immobilizer Control Unit) system. The IMMU is responsible for preventing unauthorized users from starting the vehicle by disabling the engine. When this code is triggered, it indicates a communication issue between the ECM and IMMU, which can lead to various problems with the vehicle's performance.

OBDII Code P1613 Nissan - ECM INT CIRC-IMMU
P1613 Nissan Code - ECM INT CIRC-IMMU

Common Causes of P1613 Nissan

  1. Wiring issues
  2. Faulty connectors
  3. Malfunctioning ECM
  4. Malfunctioning IMMU
  5. Electrical interference

Symptoms of P1613 Nissan

  1. Engine not starting
  2. Engine stalling unexpectedly
  3. Security light flashing
  4. Loss of power while driving
  5. Unresponsive key fob

How to Fix P1613 Nissan

  1. Diagnose the issue using a diagnostic scanner to retrieve the specific codes and pinpoint the problem area.
  2. Inspect the wiring and connectors for any signs of damage or corrosion, and repair or replace as necessary.
  3. Test the ECM and IMMU for proper functionality, and replace any components that are faulty.
  4. Clear the codes from the system and perform a system reset to ensure proper communication between the ECM and IMMU.
  5. Test drive the vehicle to verify that the issue has been resolved and that the engine starts and runs smoothly.

Cost to Fix P1613 Nissan

The typical repair costs for addressing a P1613 Nissan code can vary depending on the specific components that need to be replaced or repaired. In general, the cost can range from $200 to $800, including parts and labor. However, it's important to note that the actual cost can be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the extent of the repair needed. Additionally, diagnostic time and labor rates can vary, so it's advisable to check with local auto repair shops for a more accurate estimate.

Tech Notes for P1613 Nissan

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?

The malfunction of ECM internal circuit of IMMU communication line is detected.

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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.

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