Check Engine Light And Cruise Control Flashing Subaru Crosstrek
Subaru Crosstrek is a popular crossover vehicle that offers great fuel efficiency, safety, and performance features. However, like any other car, it can develop some problems that can be concerning or even dangerous if not addressed in a timely manner. One of the most common issues that Subaru Crosstrek owners report is the flashing of the check engine light and the cruise control light. In this article, we will explore the possible causes and solutions of this problem.
What does it mean when the check engine light and the cruise control light flash?
The check engine light (CEL) is part of the onboard diagnostics (OBD) system in your vehicle. It is designed to alert you about any problems with the engine or emission control system. When the CEL comes on, it means that the OBD system has detected a fault code in one or more sensors or components of the engine system. The cruise control light (CCL), on the other hand, indicates that the cruise control system is engaged and ready to operate.
If both the CEL and the CCL lights are flashing, it usually indicates a severe problem that requires immediate attention. Some of the possible causes of this issue are:
1. Faulty oxygen sensor
The oxygen sensor is a critical component of the engine system that measures the amount of oxygen in the exhaust and sends feedback to the engine control module (ECM). If the oxygen sensor is faulty, it can cause the engine to run too lean or too rich, which can trigger the CEL and the CCL lights to flash. You may also notice a decrease in fuel efficiency and engine performance. The oxygen sensor should be replaced as soon as possible to prevent further damage to the engine and emission control system.
2. Loose or damaged gas cap
The gas cap is a simple but essential component that seals the fuel tank and prevents fuel vapors from escaping. If the gas cap is loose, damaged, or missing, it can cause the CEL and the CCL lights to flash. This is because the OBD system detects an evaporation leak in the fuel system. To fix this issue, make sure that the gas cap is tightened properly or replaced if it's damaged. If the CEL and the CCL lights continue to flash, it may indicate a more severe evaporation leak that requires professional diagnosis and repair.
3. Malfunctioning catalytic converter
The catalytic converter is an essential part of the emission control system that converts harmful pollutants into less harmful gases before they are released into the environment. If the catalytic converter is not functioning correctly, it can cause the CEL and the CCL lights to flash. You may also notice a decrease in engine performance and a strong smell of sulfur or rotten eggs. A malfunctioning catalytic converter should be replaced as soon as possible to avoid further damage to the engine and emission control system.
4. Faulty ECM
The engine control module (ECM) is the brain of the engine system that controls and monitors various sensors and components. If the ECM is faulty, it can send incorrect signals to the OBD system, which can trigger the CEL and the CCL lights to flash. You may also experience stalling, rough idle, or poor acceleration. A faulty ECM should be diagnosed and repaired by a professional mechanic.
5. Other issues
Other issues that can cause the CEL and the CCL lights to flash include faulty spark plugs, damaged ignition coils, clogged fuel injectors, and damaged vacuum hoses. These issues can affect the performance and efficiency of the engine and should be addressed promptly.
How to diagnose and fix the problem?
If you notice that the CEL and the CCL lights are flashing, the first step is to check the gas cap to make sure it's tight and not damaged. If the gas cap is okay, you should take your Subaru Crosstrek to a professional mechanic or dealership for diagnosis and repair. They will use specialized tools and equipment to read the fault codes stored in the OBD system and determine the root cause of the problem. Once the issue is identified, they will provide you with a repair estimate and fix the problem accordingly.
Conclusion
Flashing CEL and CCL lights in your Subaru Crosstrek can indicate severe engine or emission control issues that require immediate attention. Some of the possible causes include faulty oxygen sensor, loose or damaged gas cap, malfunctioning catalytic converter, faulty ECM, and other issues. If you notice these lights flashing, check the gas cap first and then take your vehicle to a professional mechanic or dealership for diagnosis and repair. By addressing the problem promptly, you can ensure the safety, efficiency, and longevity of your Subaru Crosstrek.