engine lite comes on ..can reset by undoing battery cable but lite comes back on the next day. Tried doing the on/off on/off /on [ is this right procedure for 2005 caravan?]..engine lite flashes 10 times and stays on[ no pauses]...getting annoying already.

 

Your check engine light? The yellow one? Take it to autozone or advance auto and find out what the code is. It's free.

 

........If I buy OBD code reader will it read all codes or only engine codes? Dont have autozone around here.