AutoCodes – Saab – P1605 Saab

P1605 Saab Code - Engine Control Module Defective

Quick Answer

P1605 Saab indicates Engine Control Module Defective. Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) 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: P1605 Saab indicates Engine Control Module Defective.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) 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 1,915

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 26, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1605 Saab Description

OBDII Code P1605 Saab - Engine Control Module Defective - AutoCodes.com — P1605 Saab Code - Engine Control Module Defective

What does this mean?

What are the Possible Causes of the DTC P1605 Saab?

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

How to Fix the DTC P1605 Saab?

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 P1605 Saab 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.

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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 P1605 Saab Code

1. What are the common symptoms of OBDII code P1605 in a Saab indicating a defective Engine Control Module (ECM)?

The common symptoms include engine stalling, rough idling, reduced engine performance, and difficulty starting the vehicle.

2. What could cause the OBDII code P1605 in a Saab, signaling a defective ECM?

The code P1605 in a Saab is typically caused by issues such as a faulty ECM, wiring problems, or a bad ground connection.

3. How can I diagnose the OBDII code P1605 in my Saab related to a defective ECM?

Diagnosing the code P1605 involves using a diagnostic scanner to retrieve the fault code, checking the wiring and connections to the ECM, and performing a thorough inspection of the ECM itself.

4. Is it safe to continue driving my Saab with the OBDII code P1605 indicating a defective ECM?

It is not recommended to drive your Saab with a faulty ECM as it can lead to further damage to the engine or other components. It is best to have the issue addressed by a qualified mechanic.

5. Can I repair the OBDII code P1605 related to a defective ECM in my Saab myself?

While some DIY enthusiasts may attempt to replace the ECM themselves, it is recommended to seek the assistance of a professional mechanic or technician due to the complexity of the repair and the need for specialized tools and knowledge.

6. How much does it typically cost to repair the OBDII code P1605 in a Saab caused by a defective ECM?

The cost of repairing the OBDII code P1605 in a Saab can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

7. Are there any preventative measures I can take to avoid the OBDII code P1605 related to a defective ECM in my Saab?

To prevent the code P1605 from appearing, it is essential to perform regular maintenance on your vehicle, including checking the wiring, connectors, and grounds, as well as ensuring the ECM is functioning correctly.

8. How long does it take to repair the OBDII code P1605 indicating a defective ECM in a Saab?

The repair time for the OBDII code P1605 can vary depending on the extent of the issue and the availability of parts. In some cases, it may be resolved within a few hours, while more complex repairs could take longer.

9. Can a faulty battery or alternator cause the OBDII code P1605 related to a defective ECM in a Saab?

While a faulty battery or alternator can potentially cause electrical issues, they are not typically the direct cause of the code P1605 indicating a defective ECM in a Saab.

10. Will resetting the ECM clear the OBDII code P1605 related to a defective ECM in my Saab?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing the code P1605 is not addressed, it is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.