When the check engine light (CEL) and traction control lights illuminate simultaneously, it indicates a problem with the engine. The check engine light is designed to alert you to any issues with the engine’s performance, emissions, or other components. The traction control system (TCS) helps to prevent the wheels from spinning out on slippery surfaces, while the vehicle stability control (VSC) system helps to keep the vehicle from skidding. When these lights come on together, it means that the engine is experiencing a problem that could affect the functionality of the TCS and VSC systems.
What Causes These Lights to Come On?
There are many potential causes for the check engine and traction control lights to come on together. Some of the most common include:
Faulty Oxygen Sensor: An oxygen sensor measures the amount of oxygen in the exhaust gases and helps the engine to adjust the fuel mixture accordingly. A faulty oxygen sensor can cause the engine to run too rich or too lean, which can lead to the check engine light coming on.
Catalytic Converter Problems: The catalytic converter helps to reduce harmful emissions from the engine. If the catalytic converter is damaged or clogged, it can cause the check engine light to come on and can also affect the performance of the TCS and VSC systems.
Ignition System Problems: The ignition system is responsible for creating the spark that ignites the fuel in the engine. If there is a problem with the ignition system, it can cause the engine to misfire, which can lead to the check engine light coming on and can also affect the performance of the TCS and VSC systems.
If the check engine and traction control lights come on together, it is important to take your vehicle to a mechanic as soon as possible. The mechanic will be able to diagnose the problem and make the necessary repairs. In the meantime, you should drive cautiously and avoid driving in slippery conditions.
Check Engine and Traction Control Lights FAQ
What does it mean when the check engine and traction control lights are on?
When the check engine light (CEL) illuminates simultaneously with the vehicle stability control (VSC) and traction control system (TCS) lights, it indicates an underlying issue with the engine. These systems are designed to work effectively when the engine is operating optimally. If the engine is experiencing problems, it can affect the functionality of the VSC and TCS.
What should I do if the check engine and traction control lights are on?
To resolve the multiple warning light issue, it is crucial to determine the root cause of the CEL. This can be achieved by visiting an auto parts retailer and having the OBD’s stored trouble codes read for free. Once the trouble codes are identified (e.g., P0123), it is recommended to post them in a relevant forum or consult a mechanic for specific advice regarding the necessary repairs. Without knowing the specific trouble codes, it is challenging to provide accurate repair recommendations.
