spacedj Posted November 29, 2003 Share Posted November 29, 2003 93 ES300 with 128K miles I have an intermittent Check Engine Light condition. What does disgnostic code po53 mean ? Quote Link to comment Share on other sites More sharing options...
Tom_ES300 Posted December 1, 2003 Share Posted December 1, 2003 Look here for info: click me Note that you are around the time of the switchover from ODB I to ODB II. Tom Quote Link to comment Share on other sites More sharing options...
SKperformance Posted December 1, 2003 Share Posted December 1, 2003 93 is obd-1 Quote Link to comment Share on other sites More sharing options...
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