New answers tagged mazda
It means it's a pending code, in other words it's a current and history code that's why it's listed twice. As for you second question, it's most likely a stuck open thermostat it could be a faulty Engine Temperature Sensor, but most of the time that will set a different code.
Have you checked the foundation bolts of the engine? Many times these work loose after hard driving and cause vibrations. You can also consult online repair manuals which will give you complete information on troubleshooting and repairs.
Try idle speed sensor or spraying throttle body cleaner into throttle body or removing it entirely and cleaning it,especially where the idle air port entry.
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