Fault codes are usually in the form of a letter followed by several numbers (e.g., P0171, B1234, U0100). These codes are stored in the vehicle's onboard diagnostic (OBD) system.
To find the fault codes for *your* Ford Focus, you'll need to:
1. Use an OBD-II scanner: This is the most reliable method. These scanners can be purchased relatively inexpensively from auto parts stores or online. They plug into your car's OBD-II port (usually found under the dashboard) and retrieve the stored diagnostic trouble codes (DTCs).
2. Consult a repair manual: A repair manual specific to your year and model Ford Focus will often have a section listing the possible DTCs and their meanings.
3. Use online resources: Websites like forums dedicated to Ford Focus owners, or online databases of OBD-II codes, can sometimes provide information about specific codes. However, be cautious, as not all information online is accurate or applicable to your exact vehicle.
Important Considerations:
* Generic vs. Manufacturer-Specific Codes: OBD-II scanners can read generic codes (those starting with "P"), but some codes are manufacturer-specific and may require a more advanced scanner to fully interpret.
* Code Interpretation: Even with a code, understanding its meaning and the necessary repair can be challenging. It's always best to consult a mechanic or use a reliable repair manual for accurate interpretation and repair guidance.
In short, there is no single list. You need to use a diagnostic tool specific to your car to find out what codes it's throwing.
