To clear the light, you need to fix the underlying problem that caused it to illuminate. Simply disconnecting the battery won't work long-term; the computer will store the code again once the problem persists.
Here's the proper process:
1. Obtain a Diagnostic Trouble Code (DTC): You'll need to use an OBDI code reader (often called a "scan tool") to read the diagnostic trouble code(s) stored in the car's computer. These codes indicate the specific problem the car has detected. Auto parts stores often offer free code reading services.
2. Diagnose and Repair the Problem: Based on the DTC(s), you can diagnose the problem. This might involve checking sensors, wiring, or other components. Repairing the issue is crucial. A Haynes or Chilton repair manual specific to your 1994 Ford Probe will be immensely helpful here.
3. Clear the Code (After Repair): Once the problem is fixed, *then* you can clear the code. Some OBDI scanners allow for code clearing. Disconnecting the negative battery terminal for a short period (around 15 minutes) *might* clear the code, but as mentioned, it's not a guarantee, and the light will likely reappear if the problem isn't solved.
Important Considerations:
* OBDI Limitations: OBDI systems are less sophisticated than later OBDII systems. Code reading and clearing are less standardized.
* Professional Help: If you're not comfortable diagnosing and repairing car problems yourself, take your Probe to a qualified mechanic. Attempting repairs without the proper knowledge could lead to further damage or injury.
* The Check Engine Light is Your Friend: It alerts you to potential problems that, if left unaddressed, could lead to more significant (and expensive) repairs down the road.
In short, don't focus on resetting the light; focus on fixing what's wrong with your car. The light is a symptom, not the disease.
