AutoCodes – Volvo – P0605 Volvo

P0605 Volvo Code - Control Module Fault

Quick Answer

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when a processing malfunction is detected. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection. 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 Volvo indicates Control Module Fault.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection.
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 1,755

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 Mar 17, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0605 Volvo Description

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when a processing malfunction is detected. All power supplies and grounds should be tested before condemning a control module. Signals processed by the control module must be in digital form so analog signals must be converted for analysis. Before replacing the control module an investigation must take place to ensure the module is operating on the latest software. This fault code should only be addressed after any other component-related codes have been investigated.

OBDII Code P0605 Volvo - Control Module Fault - AutoCodes.com — P0605 Volvo Code - Control Module Fault

What does this mean?

What are the Possible Causes of the DTC P0605 Volvo?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P0605 Volvo?

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 Volvo 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 Volvo code?

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Need Help with the 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 Volvo Code

1. What are the common symptoms of an OBDII code P0605 related to Control Module Fault in a Volvo?

The common symptoms include issues with engine performance, such as rough idling, stalling, or difficulty starting the vehicle.

2. What are the possible causes of an OBDII code P0605 in a Volvo?

The code P0605 can be triggered by a faulty ECM (Engine Control Module), damaged wiring or connectors, or issues with the software programming of the module.

3. How serious is an OBDII code P0605 Control Module Fault in a Volvo?

An OBDII code P0605 should be addressed promptly as it can affect the overall performance and drivability of the vehicle. Ignoring this issue may lead to more severe problems over time.

4. Can I still drive my Volvo with an OBDII code P0605 present?

It is not recommended to drive your Volvo with an active OBDII code P0605 as it can cause further damage to the engine or other components. It is advisable to get the issue diagnosed and repaired as soon as possible.

5. How can I diagnose an OBDII code P0605 in my Volvo?

Diagnosing an OBDII code P0605 typically involves using a diagnostic scanner to retrieve the code, checking the ECM for any visible damage, and inspecting the wiring and connectors for any issues.

6. Is it possible to reset an OBDII code P0605 in a Volvo?

While you can clear the code temporarily with a diagnostic scanner, the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

7. What are some repair tips for fixing an OBDII code P0605 in a Volvo?

Repairing an OBDII code P0605 may involve replacing the ECM, repairing or replacing damaged wiring or connectors, and ensuring the software programming is updated to the latest version.

8. Can a DIY enthusiast fix an OBDII code P0605 in a Volvo?

While some simple diagnostics and repairs can be done by DIY enthusiasts, diagnosing and repairing an OBDII code P0605 related to Control Module Fault may require professional knowledge and tools.

9. How much does it cost to repair an OBDII code P0605 in a Volvo?

The cost of repairing an OBDII code P0605 can vary depending on the cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop. It is advisable to obtain quotes from reputable mechanics.

10. How can I prevent an OBDII code P0605 from occurring in my Volvo?

To prevent an OBDII code P0605, it is essential to perform regular maintenance on your vehicle, including checking the wiring and connectors for any signs of damage, and ensuring the ECM software is up to date.