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Engine-Codes – Generic – P1665

P1665 Code - EVAP Vent Solenoid Control Circuit Conditions

Quick Answer

The P1665 code refers to an issue with the EVAP (Evaporative Emission Control System) Vent Solenoid Control Circuit. Common causes include Faulty EVAP Vent Solenoid, Corroded or damaged wiring in the control circuit, ECM malfunction. 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
P1665 indicates EVAP Vent Solenoid Control Circuit Conditions.
Common causes
Common causes include Faulty EVAP Vent Solenoid, Corroded or damaged wiring in the control circuit, ECM malfunction.
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 05, 2024
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Code P1665 Description

The P1665 code refers to an issue with the EVAP (Evaporative Emission Control System) Vent Solenoid Control Circuit. This system is responsible for controlling the flow of fuel vapor from the fuel tank to the engine, preventing harmful emissions from being released into the atmosphere. When this code is triggered, it indicates that there is a problem with the circuit that controls the vent solenoid, potentially leading to issues with the vehicle's emissions system.

OBDII Code P1665 - EVAP Vent Solenoid Control Circuit Conditions
P1665 Code - EVAP Vent Solenoid Control Circuit Conditions

Common Causes of P1665

  1. Faulty EVAP Vent Solenoid
  2. Corroded or damaged wiring in the control circuit
  3. ECM malfunction
  4. Vacuum leaks in the EVAP system
  5. Clogged EVAP canister

Symptoms of P1665

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Strong fuel odor
  4. Difficulty starting the engine
  5. Rough idling or stalling

How to Fix P1665

  1. Diagnose the issue using a scan tool to confirm the P1665 code and pinpoint the exact cause.
  2. Inspect the wiring and connections in the EVAP Vent Solenoid Control Circuit for any damage or corrosion.
  3. Test the EVAP Vent Solenoid for proper operation and replace if necessary.
  4. Check for any vacuum leaks in the EVAP system and repair as needed.
  5. Clear the code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1665

The typical repair cost for addressing a P1665 code can range from $100 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to factor in diagnostic time, parts, and labor costs when budgeting for this repair. Keep in mind that rates may vary based on location and the type of vehicle being serviced.

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Code P1665 Information for Specific Makes

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.

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