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P1655 Pontiac Code - EVAP Purge Solenoid Control Circuit

Quick Answer

The P1655 diagnostic trouble code (DTC) for Pontiac vehicles specifically relates to the EVAP (Evaporative Emission Control System) Purge Solenoid Control Circuit. Common causes include Faulty Purge Solenoid: The purge solenoid itself may be faulty, causing issues with the control circuit, Wiring Issues: Problems with the wiring or connectors related to the EVAP Purge Solenoid Control Circuit can trigger this DTC, PCM (Powertrain Control Module) Failure: A malfunctioning PCM can also cause issues with the control circuit. 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
P1655 Pontiac indicates EVAP Purge Solenoid Control Circuit.
Common causes
Common causes include Faulty Purge Solenoid: The purge solenoid itself may be faulty, causing issues with the control circuit, Wiring Issues: Problems with the wiring or connectors related to the EVAP Purge Solenoid Control Circuit can trigger this DTC, PCM (Powertrain Control Module) Failure: A malfunctioning PCM can also cause issues with the control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1655 Pontiac Description

The P1655 diagnostic trouble code (DTC) for Pontiac vehicles specifically relates to the EVAP (Evaporative Emission Control System) Purge Solenoid Control Circuit. The EVAP system in a vehicle is designed to capture and store fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The purge solenoid is a key component of this system, controlling the flow of fuel vapors from the charcoal canister to the engine for combustion.

OBDII Code P1655 Pontiac - EVAP Purge Solenoid Control Circuit
P1655 Pontiac Code - EVAP Purge Solenoid Control Circuit

Common Causes of P1655 Pontiac

  1. Faulty Purge Solenoid: The purge solenoid itself may be faulty, causing issues with the control circuit.
  2. Wiring Issues: Problems with the wiring or connectors related to the EVAP Purge Solenoid Control Circuit can trigger this DTC.
  3. PCM (Powertrain Control Module) Failure: A malfunctioning PCM can also cause issues with the control circuit.
  4. Vacuum Leaks: Leaks in the vacuum lines connected to the EVAP system can disrupt the system's operation.

Symptoms of P1655 Pontiac

  1. Check Engine Light: The most common symptom of this DTC is the illumination of the check engine light on the vehicle's dashboard.
  2. Rough Idle: A malfunctioning EVAP Purge Solenoid Control Circuit can cause the engine to idle roughly or inconsistently.
  3. Reduced Fuel Efficiency: Issues with the EVAP system can lead to decreased fuel efficiency as fuel vapors are not being burned efficiently.
  4. Failed Emissions Test: If the EVAP system is not functioning properly, it can lead to increased emissions, potentially causing the vehicle to fail an emissions test.

How to Fix P1655 Pontiac

  1. Diagnose the Issue: Use a scan tool to read the DTC and confirm that the EVAP Purge Solenoid Control Circuit is the problem.
  2. Inspect Wiring: Check the wiring and connectors for any damage or corrosion that may be causing the issue.
  3. Test Purge Solenoid: Test the purge solenoid to determine if it is functioning properly or needs to be replaced.
  4. Replace Purge Solenoid: If the purge solenoid is faulty, replace it with a new one to restore proper operation of the EVAP system.
  5. Clear DTC: After completing the repair, clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1655 Pontiac

The cost of repairing the EVAP Purge Solenoid Control Circuit can vary depending on the specific vehicle make and model, as well as the location and labor rates of the auto repair shop. On average, the parts for this repair can range from $50 to $150, while the labor costs can be between $100 and $200. Overall, the total repair cost may fall between $150 and $350. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your specific circumstances.

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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 P1655 Pontiac Code

1. What does OBDII code P1655 for a Pontiac indicate?

The OBDII code P1655 for a Pontiac refers to a fault in the EVAP purge solenoid control circuit.

2. What are common symptoms of OBDII code P1655 in a Pontiac?

Common symptoms of OBDII code P1655 in a Pontiac may include rough idling, decreased fuel efficiency, and the illumination of the check engine light.

3. What are possible causes of OBDII code P1655 in a Pontiac?

Possible causes of OBDII code P1655 in a Pontiac include a faulty EVAP purge solenoid, damaged wiring or connectors in the control circuit, or a problem with the ECM (engine control module).

4. How can I diagnose OBDII code P1655 in my Pontiac?

Diagnosing OBDII code P1655 in a Pontiac involves using an OBDII scanner to retrieve the code, checking the EVAP purge solenoid and its connections for any visible damage, and testing the circuit for continuity.

5. Can I continue driving my Pontiac with OBDII code P1655?

It is not recommended to drive your Pontiac with OBDII code P1655 present, as it can lead to poor engine performance and potential damage if left unresolved.

6. How is OBDII code P1655 in a Pontiac typically repaired?

Repairing OBDII code P1655 in a Pontiac often involves replacing the faulty EVAP purge solenoid, repairing any damaged wiring or connectors, and clearing the error code with an OBDII scanner.

7. Is it possible to reset OBDII code P1655 in a Pontiac without fixing the issue?

While you can reset the error code using an OBDII scanner, it is not recommended to do so without addressing the underlying issue, as the problem will likely recur.

8. How much does it cost to fix OBDII code P1655 in a Pontiac?

The cost to fix OBDII code P1655 in a Pontiac can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Are there any preventive measures to avoid OBDII code P1655 in a Pontiac?

To prevent OBDII code P1655 in a Pontiac, it is recommended to perform regular maintenance checks on the EVAP system, including inspecting the purge solenoid and its connections for any signs of wear or damage.

10. Can a DIY enthusiast repair OBDII code P1655 in a Pontiac?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P1655 in a Pontiac, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved effectively.

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