Here's what you should do:
1. Diagnose the Problem: The most crucial step. You need to find out *why* the check engine light is on. You have several options:
* OBD-II Scanner: This is the best approach. A relatively inexpensive OBD-II scanner (available at most auto parts stores) can read the diagnostic trouble codes (DTCs). These codes give you a specific indication of the problem. Search online for "[your Dakota's year and engine] DTC codes" to find explanations of the codes you get.
* Auto Parts Store: Many auto parts stores offer free check engine light diagnosis. They'll plug in a scanner and tell you the code(s). However, they'll likely try to sell you parts to fix the problem.
* Mechanic: A qualified mechanic can accurately diagnose and repair the problem. This is the most expensive but often the most reliable option, especially for complex issues.
2. Repair the Problem: Once you know the cause, fix it! This could involve anything from replacing a faulty sensor to a more extensive repair.
3. Clear the Code (After Repair): *Only after you've fixed the problem* should you clear the check engine light. Many OBD-II scanners have a function to clear codes. Some advanced scanners allow you to clear codes through the vehicle's computer system. Sometimes, simply disconnecting the battery for a short period (15-30 minutes) might clear the code, but this isn't guaranteed.
Important Considerations:
* Don't just clear the code without fixing the problem: The light will come back on, and the underlying issue could worsen.
* State Inspections: In many areas, a check engine light will fail a state inspection.
* Safety: Some problems that trigger the check engine light can affect your vehicle's performance and safety (e.g., oxygen sensor failure, catalytic converter issues).
In short, focus on *fixing the underlying problem*, not just resetting the light. Ignoring it is not recommended.
