Experiencing a check engine light alongside a flashing cruise control light in your Subaru Outback can be concerning. This combination typically indicates an underlying issue that requires attention.

Causes of the Warning Lights

When the check engine light illuminates and the cruise control light begins to flash, it often signifies a problem with the vehicle’s systems. Here are some common reasons for these warnings:

  • Loose or Missing Gas Cap: One of the most frequent causes is a loose or missing gas cap. This can trigger the check engine light and disable the cruise control function. Ensuring that the gas cap is securely tightened can often resolve this issue.

  • Engine Misfire: If the check engine light is flashing, it may indicate that one or more cylinders are misfiring. This situation can lead to poor engine performance and should not be ignored, as it could damage the catalytic converter if driven for an extended period.

  • Evaporative Emission System Issues: Problems with the evaporative emissions system can also cause these lights to activate. This might involve faulty sensors or leaks in the system.

  • Faulty Sensors: Issues with various sensors, such as oxygen sensors or mass airflow sensors, can trigger both warning lights. These components are critical for optimal engine performance and emissions control.

What to Do When Lights Appear

When faced with these warning lights, consider taking the following steps:

1. Check the Gas Cap: Ensure that your gas cap is tight and secure. If it was loose, this might resolve the issue.

2. Read Diagnostic Codes: Utilize an OBD-II scanner to read any diagnostic trouble codes (DTCs) that may provide insight into the specific problem. Many auto parts stores offer free code reading services.

3. Inspect for Other Issues: If the gas cap is secure and codes indicate other issues, inspect components like spark plugs, fuel injectors, and sensors for malfunction.

4. Seek Professional Help: If you cannot identify or resolve the issue yourself, consider taking your vehicle to a certified mechanic or Subaru dealership for a thorough diagnosis.

FAQs About Subaru Outback Warning Lights

    • Why is my cruise control flashing?
      The cruise control light flashes when there is an issue detected by the vehicle's onboard diagnostics, often linked to the check engine light being on.
    • Can I drive my Subaru with these lights on?
      While it may be safe to drive short distances if you suspect a loose gas cap, persistent flashing lights indicate serious issues that should be addressed immediately to avoid further damage.
    • What does it mean if both lights turn off after tightening the gas cap?
      If both lights turn off after securing the gas cap, it likely means that was the source of the problem.

Understanding these warning signals can help you maintain your Subaru Outback effectively and prevent potential long-term damage. Always prioritize proper maintenance and address any warning lights promptly.