What do you look for when the check engine light comes on in a 1999 Breeze?

When the check engine light (CEL) comes on in a 1999 Plymouth Breeze (or any car for that matter), the first thing you should not do is panic. The light itself only indicates a problem has been detected within the vehicle's onboard diagnostic system (OBD-II). It doesn't tell you *what* the problem is.

To find out what's causing the CEL in your 1999 Breeze, you need to retrieve the diagnostic trouble codes (DTCs) stored in the car's computer. Here's what you should look for:

1. Retrieve Diagnostic Trouble Codes (DTCs): This is the most crucial step. You have several options:

* OBD-II Scanner: The easiest method. Buy a relatively inexpensive OBD-II scanner from an auto parts store. These plug into the OBD-II port (usually under the dashboard) and will read the DTCs. The codes will be a combination of letters and numbers (e.g., P0171, P0420).

* Auto Parts Store: Many auto parts stores will scan your car's computer for free. They can read the codes and often give you a general idea of the problem.

* Mechanic: A mechanic will have the equipment and expertise to not only read the codes but also diagnose and fix the issue.

2. Interpret the DTCs: Once you have the codes, look them up online. Many websites (like RepairPal, etc.) have databases of OBD-II trouble codes and their meanings. Understanding the code will give you a much clearer picture of the potential problem. Keep in mind that some codes are more specific than others.

3. Consider the Symptoms: Along with the DTCs, pay attention to any other symptoms your car is exhibiting. Is it running rough? Is the engine misfiring? Is there a loss of power? Is the fuel economy affected? These symptoms, along with the DTCs, will help pinpoint the cause.

4. Common Problems in 1999 Plymouth Breezes: While the DTCs will be specific to your car's issue, some common problems in this model year include:

* Oxygen Sensor Issues: These are relatively common and can trigger the CEL.

* Mass Airflow Sensor (MAF) Problems: A faulty MAF sensor can affect fuel delivery and cause the engine to run poorly.

* Catalytic Converter Issues: A failing catalytic converter can also trigger the CEL.

* Ignition System Problems: Issues with spark plugs, ignition coils, or wires can also cause a CEL.

In summary: Don't just rely on the CEL itself. Get the DTCs and use them, along with any noticeable symptoms, to diagnose the problem. If you're not comfortable working on your car yourself, take it to a qualified mechanic. Ignoring a check engine light can lead to more significant and costly repairs down the road.