Jaguar S-Type won't pass smog due to engine light issue needing repair on Jaguar S-Type

Some Jaguar S-Type owners report experiencing difficulties passing smog tests due to an engine light issue that requires repair. The presence of the Check Engine Light (CEL) often indicates problems with the vehicle's emissions system or engine performance, necessitating a diagnostic scan with an OBD-II scanner to identify specific error codes. Additionally, owners may find that inspecting emissions system components, such as oxygen sensors and the catalytic converter, is essential to pinpoint the source of the problem. Repairs may involve replacing faulty sensors or wiring related to emissions control. After making the necessary repairs, it is important to clear the error codes and retest the vehicle for emissions compliance. Addressing these engine light issues is crucial for environmental compliance and the overall performance of the Jaguar S-Type.