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  1. Chris

    How do I retrieve diagnostic trouble codes when there is a check engine light illuminated?

    If your TJ has a check engine light illuminated, below is the procedure for retrieving the diagnostic trouble code(s): Turn the ignition key until the digital odometer displays, then turn it back to off. Repeat three times in succession. (ON/OFF/ON/OFF/ON) Count the number of times the check...
    • Chris
    • Thread
    • cel check engine check engine light engine fault code sel
    • Replies: 16
    • Forum: TJ Resources
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