Chimed ...engine light on ...code 4 .. car seems to be working fine ...what's the problem ?
If the check engine light is on there will be OBDII and manufacturer specific codes. These codes start with a letter and are followed by four numbers (P0304 for example). These codes can only be read by an OBDII code reader or a scan tool. These are the codes you need to get in order to start trouble shooting your vehicles problem.
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