AutoCodes – Saab – P1601 Saab

P1601 Saab Code - Engine Control Module Supply Voltage

Quick Answer

Battery positive voltage is supplied to the Engine Control Module (ECM) even when the ignition switch is OFF for use by the Diagnostic Trouble Code (DTC) memory and air–fuel ratio adaptive control value memory, etc. 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: P1601 Saab indicates Engine Control Module Supply Voltage.
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 2,794

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 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1601 Saab Description

OBDII Code P1601 Saab - Engine Control Module Supply Voltage - AutoCodes.com — P1601 Saab Code - Engine Control Module Supply Voltage

What does this mean?

What are the Possible Causes of the DTC P1601 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 P1601 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 P1601 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 P1601 Saab Code

1. What are the common symptoms of OBDII code P1601 in a Saab related to the Engine Control Module Supply Voltage?

- Common symptoms include engine stalling, rough idling, poor acceleration, and even the inability to start the engine.

2. What are the potential causes of OBDII code P1601 in a Saab?

- The code P1601 in a Saab is often caused by a faulty engine control module (ECM), wiring issues, or a weak battery.

3. How can I diagnose the OBDII code P1601 in my Saab?

- Diagnosing OBDII code P1601 involves using a scan tool to retrieve the code, checking the battery voltage, inspecting the ECM connections, and testing the wiring for any faults.

4. Can a weak battery trigger the OBDII code P1601 in a Saab?

- Yes, a weak or failing battery can cause voltage fluctuations that may trigger the P1601 code related to the Engine Control Module Supply Voltage.

5. What is the recommended repair approach for fixing OBDII code P1601 in a Saab?

- The recommended repair approach includes checking and replacing the battery if necessary, inspecting and repairing any damaged wiring, and, if needed, replacing the engine control module.

6. Is it safe to continue driving my Saab with the OBDII code P1601 present?

- It is not advisable to continue driving your Saab with the P1601 code as it can lead to further damage and potential safety hazards. Seek professional assistance for diagnosis and repair.

7. Can resetting the OBDII code P1601 in my Saab make it go away permanently?

- Simply resetting the code may temporarily clear it, but if the underlying issue such as a faulty ECM or wiring problem is not addressed, the code is likely to reappear.

8. Are there any preventive measures to avoid OBDII code P1601 in a Saab?

- Regularly checking the battery health, ensuring proper maintenance of the electrical system, and addressing any warning signs promptly can help prevent the occurrence of code P1601.

9. Will replacing the engine control module (ECM) fix the OBDII code P1601 in my Saab?

- Replacing the ECM is a common solution for resolving the P1601 code, especially if it is found to be the root cause of the voltage supply issue. However, thorough diagnosis is recommended before proceeding with ECM replacement.

10. How much can I expect to pay for repairing OBDII code P1601 in a Saab at a mechanic or dealership?

- The cost of repairing OBDII code P1601 can vary depending on the exact cause and the labor rates of the service provider. It is advisable to obtain quotes from different shops for an accurate estimate.