1. Loose or faulty gas cap: Ensure that the gas cap is properly tightened. A loose or faulty gas cap can cause the Check Engine Light to turn on, especially in older vehicles like your Olds Achieva.
2. Check the brake fluid level: Low brake fluid can trigger the brake warning light.
3. Check the fuses: Inspect the fuses associated with the affected systems (airbags, brakes, and security) and replace any blown fuses.
4. Malfunctioning sensors: Faulty sensors, such as the oxygen sensor or mass airflow sensor, can cause the Check Engine Light to stay on.
5. Wiring issues: Check for any damaged or loose wiring that may be causing a faulty connection to the sensors or control modules.
6. Computer (ECM) issues: In some cases, the car's computer (ECM) may be experiencing issues that cause the service lights to stay on. This is more challenging to diagnose and may require professional help from an auto mechanic.
If you have checked all of the above and the service lights still remain on, it is recommended to have the vehicle diagnosed by a qualified mechanic using a scan tool. This will help identify the exact cause of the issue and allow for the appropriate repairs to be made.
