AutoCodes – Nissan – P0605 2006 Nissan Altima Sedan

P0605 2006 Nissan Altima Sedan Code - Engine Control Module Fault

Quick Answer

The Engine Control Module (ECM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. Common causes include Engine Control Module (ECM) may be faulty, ECM harness power supply circuit is open or shorted, ECM harness ground circuit is open or shorted. 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: P0605 2006 Nissan Altima Sedan indicates Engine Control Module Fault.
Common causes: Common causes include Engine Control Module (ECM) may be faulty, ECM harness power supply circuit is open or shorted, ECM harness ground circuit is open or shorted.
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.

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Code Popularity 3,797

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0605 2006 Nissan Altima Sedan Description

The Engine Control Module (ECM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the ECM is functioning properly. If any malfunction is detected, the ECM sets the P0605 code and illuminates the MIL.

OBDII Code P0605 2006 Nissan Altima Sedan - Engine Control Module Fault - AutoCodes.com — P0605 2006 Nissan Altima Sedan Code - Engine Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 2006 Nissan Altima Sedan?

Engine Control Module (ECM) may be faulty
ECM harness power supply circuit is open or shorted
ECM harness ground circuit is open or shorted

How to Fix the DTC P0605 2006 Nissan Altima Sedan?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0605 2006 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0605 2006 Nissan Altima Sedan 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 P0605 2006 Nissan Altima Sedan Code

What does the OBDII code P0605 mean for a 2006 Nissan Altima?

P0605 indicates an Internal Control Module Read-Only Memory (ROM) error in the Engine Control Module (ECM), suggesting a possible fault in the ECM.

What are the common symptoms of code P0605 in a 2006 Nissan Altima?

Symptoms may include a check engine light, poor engine performance, stalling, difficulty starting, or the engine entering limp mode.

What causes the P0605 code to appear?

The most common causes are a faulty ECM, software corruption, electrical issues like poor wiring or connectors, or rarely, a glitch triggered by low battery voltage.

Can I drive my 2006 Nissan Altima with a P0605 code?

Driving with a P0605 code is not recommended, as the ECM may not properly manage the engine, leading to reduced performance or potential damage.

How can I fix the P0605 code on my Nissan Altima?

Repairs may involve reprogramming or updating the ECM, repairing damaged wiring or connectors, or replacing the ECM if it's defective.

What tools are needed to diagnose a P0605 code?

A professional OBDII scanner and a multimeter are typically needed to diagnose the ECM, wiring, and related systems accurately.

Is it expensive to repair the P0605 code in a 2006 Nissan Altima?

Repair costs vary depending on whether the ECM needs reprogramming (less expensive) or replacement (more expensive), which can range from $500 to $1500.

Can a dead or weak battery cause a P0605 code?

Yes, a weak or dead battery can cause voltage issues that may trigger the P0605 code by affecting the ECM's functionality.

Is replacing the ECM the only fix for a P0605 code?

No, not always. Sometimes reprogramming the ECM, fixing wiring issues, or addressing power supply problems can resolve the code.

How do I prevent a P0605 code from recurring?

Regular maintenance, ensuring the battery and electrical connections are in good condition, and keeping ECM software up to date can help prevent this issue.