Buick Enclave check engine light due to exhaust leak after system replacement and burned rubber smell on Buick Enclave

Some Buick Enclave owners report experiencing a check engine light due to an exhaust leak following a system replacement, along with a burning rubber smell. This issue may be linked to the exhaust leak itself or fluids, such as oil or transmission fluid, coming into contact with hot engine components. Additionally, some owners find that a faulty oxygen sensor can trigger the check engine light and affect the vehicle's emission control system. A loose gas cap is another common cause that can lead to the light illuminating. The check engine light also indicates that Diagnostic Trouble Codes (DTCs) are stored in the system, which can help pinpoint the problem. Emission system issues, along with potential problems in the ignition and engine timing systems, are frequently responsible for the check engine light activation. Owners are advised to have their vehicles inspected by a qualified mechanic to diagnose and address these issues promptly, especially if the burning rubber smell continues, to prevent further damage and ensure optimal vehicle performance and safety.