Here's why:
* Safety: Resetting a check engine light without diagnosing the underlying problem could mask a serious issue, potentially leading to further damage and safety risks.
* Diagnostic Codes: The check engine light is triggered by fault codes stored in your vehicle's computer. These codes need to be read and interpreted by a qualified mechanic to determine the cause of the issue.
* Variety of Models: Nissan pickups from 1991 come in various models and engine types, each with its own unique diagnostic procedures.
What You Should Do:
1. Get the Fault Codes Read: Take your vehicle to a trusted mechanic or an auto parts store that offers code reading services. They can use a scan tool to retrieve the trouble codes stored in your vehicle's computer.
2. Diagnose the Problem: The mechanic will use the code information to identify the specific issue causing the check engine light to illuminate.
3. Repair the Problem: Once the cause is determined, the mechanic will make the necessary repairs.
4. Clear the Code: After the repairs are completed, the mechanic will use their scan tool to clear the stored codes, which will turn off the check engine light.
Important Note:
* Don't just reset the light: Simply resetting the light without addressing the underlying issue will only temporarily resolve the problem and could potentially lead to further damage.
* Use a qualified mechanic: While there are some DIY methods for resetting the check engine light, it's best to leave it to a professional who has the tools and expertise to properly diagnose and repair the problem.
