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What is an OBD II problem?

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OBD II is an acronym for On-Board Diagnostic II, the second generation of on-board self-diagnostic equipment requirements for light- and medium-duty California vehicles. ... If a problem or malfunction is detected, the OBD II system illuminates a warning light on the vehicle instrument panel to alert the driver.Sep 19, 2019');})();(function(){window.jsl.dh('_slp2YK6ELdX--wSCzqSIDQ41','
OBD II is designed to turn on the MIL light if a problem occurs that may cause emissions to exceed federal limits by 150 percent. The problem has to occur more than once, and it must be significant enough to create a potential emissions problem (one serious enough to prevent a vehicle from passing an emissions test).

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