Engine-CodesSaab – P1659 Saab

P1659 Saab Code - Turbocharger Bypass Valve Short To Positive

Quick Answer

The P1659 diagnostic trouble code (DTC) for Saab vehicles indicates a Turbocharger Bypass Valve Short To Positive. Common causes include Wiring issues: Damaged or frayed wiring connecting the turbocharger bypass valve to the vehicle's electrical system, Faulty bypass valve: A malfunctioning or failed turbocharger bypass valve can trigger this code, Electrical short circuit: Any short circuit between the bypass valve and the positive side of the electrical system can cause this issue. 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
P1659 Saab indicates Turbocharger Bypass Valve Short To Positive.
Common causes
Common causes include Wiring issues: Damaged or frayed wiring connecting the turbocharger bypass valve to the vehicle's electrical system, Faulty bypass valve: A malfunctioning or failed turbocharger bypass valve can trigger this code, Electrical short circuit: Any short circuit between the bypass valve and the positive side of the electrical system can cause this issue.
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 10, 2024
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Code P1659 Saab Description

The P1659 diagnostic trouble code (DTC) for Saab vehicles indicates a Turbocharger Bypass Valve Short To Positive. The turbocharger bypass valve, also known as the wastegate or diverter valve, is a crucial component of the turbocharging system in a vehicle. Its primary function is to regulate the boost pressure generated by the turbocharger, ensuring optimal performance and efficiency.

OBDII Code P1659 Saab - Turbocharger Bypass Valve Short To Positive
P1659 Saab Code - Turbocharger Bypass Valve Short To Positive

Common Causes of P1659 Saab

  1. Wiring issues: Damaged or frayed wiring connecting the turbocharger bypass valve to the vehicle's electrical system.
  2. Faulty bypass valve: A malfunctioning or failed turbocharger bypass valve can trigger this code.
  3. Electrical short circuit: Any short circuit between the bypass valve and the positive side of the electrical system can cause this issue.
  4. Poor electrical connection: Loose or corroded electrical connections can disrupt the flow of current to the bypass valve.
  5. ECU malfunction: A malfunctioning Engine Control Unit (ECU) can also be a potential cause of this code.

Symptoms of P1659 Saab

  1. Loss of power: The vehicle may experience a significant decrease in power output, especially during acceleration.
  2. Engine hesitation: The engine may hesitate or stumble when accelerating, particularly at higher speeds.
  3. Check Engine Light: The Check Engine Light may illuminate on the dashboard, indicating a fault in the turbocharger system.
  4. Turbo lag: Increased turbo lag, where there is a delay in the turbocharger spooling up and providing boost pressure.
  5. Rough idle: The engine may idle roughly or inconsistently, indicating a potential issue with the turbocharger bypass valve.

How to Fix P1659 Saab

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the specific code and pinpoint the exact location of the short circuit.
  2. Inspect wiring: Check the wiring harness for any damage or corrosion, repairing or replacing as necessary.
  3. Test bypass valve: Test the turbocharger bypass valve to ensure it is functioning correctly and replace if faulty.
  4. Check electrical connections: Inspect all electrical connections related to the bypass valve and ensure they are secure and free of corrosion.
  5. Clear codes: After repairing the issue, clear the DTC and test drive the vehicle to ensure the problem has been resolved.

Cost to Fix P1659 Saab

The cost of repairing a Turbocharger Bypass Valve Short To Positive code can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair can range from $100 to $300, while labor costs can add an additional $100 to $200. In total, you can expect to pay anywhere from $200 to $500 for this repair, but it's important to note that prices can vary based on location and the labor rates of the auto repair shop. It's recommended to obtain quotes from multiple shops to find the best price for your specific situation.

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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 P1659 Saab Code

1. What are the common symptoms of OBDII code P1659 in a Saab related to the Turbocharger Bypass Valve Short To Positive?

The common symptoms include the engine light illuminated on the dashboard, reduced engine performance, and potential stalling or rough idling.

2. What are the possible causes of OBDII code P1659 in a Saab indicating Turbocharger Bypass Valve Short To Positive?

Potential causes may include damaged wiring or connectors, a faulty turbocharger bypass valve, or a short circuit in the electrical system.

3. How can I diagnose the Turbocharger Bypass Valve Short To Positive issue in my Saab?

To diagnose this issue, you can use an OBDII scanner to retrieve the specific trouble code, visually inspect the wiring and connectors for any damage, and test the turbocharger bypass valve for proper functionality.

4. Can I continue driving my Saab with OBDII code P1659 related to the Turbocharger Bypass Valve Short To Positive?

It is not recommended to continue driving the vehicle with this issue as it can lead to further damage to the turbocharger system and potentially cause engine performance issues.

5. What are the repair options for fixing OBDII code P1659 in a Saab due to Turbocharger Bypass Valve Short To Positive?

The repair options may include repairing or replacing damaged wiring and connectors, replacing the faulty turbocharger bypass valve, and clearing the trouble code with an OBDII scanner.

6. How much does it typically cost to repair OBDII code P1659 on a Saab related to Turbocharger Bypass Valve Short To Positive?

The cost of repair can vary depending on the extent of the damage and the parts needed, but it can range from a few hundred to a thousand dollars at a dealership or repair shop.

7. Are there any preventive maintenance tips to avoid OBDII code P1659 in a Saab connected to Turbocharger Bypass Valve Short To Positive?

Regularly inspecting the turbocharger system, checking for any signs of wear or damage, and addressing any issues promptly can help prevent this trouble code from occurring.

8. Can a DIY enthusiast fix OBDII code P1659 in a Saab related to Turbocharger Bypass Valve Short To Positive?

Depending on their skill level and access to tools, a DIY enthusiast may be able to address this issue by following a repair manual or online guides. However, it is recommended to seek professional help if unsure.

9. Will resetting the OBDII trouble code P1659 related to Turbocharger Bypass Valve Short To Positive make it go away permanently?

Resetting the trouble code may temporarily turn off the engine light, but if the underlying issue is not fixed, the code is likely to reappear once the system detects the problem again.

10. How urgent is it to address OBDII code P1659 in a Saab due to Turbocharger Bypass Valve Short To Positive?

It is recommended to address this issue promptly to prevent further damage to the turbocharger system and ensure the vehicle operates safely and efficiently.

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