You should be able to display the codes on your odometer. Click the
ignition three times (OFF-ON-OFF-ON-OFF-ON), and any stored codes (Pxxxx)
will display on the odometer. When finished, the odometer will display
'Pdone'. You can then look the codes up online (do a google search for
'OBD-II codes'). If you want to buy one, pretty much any generic OBD-II
code reader will do the same, and will also let you reset the CEL without
having to disconnect the battery. Here's a pretty cheap one:
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