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Q:

CHECK ENG LIGHT CAME ON,WENT TO AUTO ZONE AND CODES PO402 AND P0340 ARE ACTIVE. on 2000 Ford Ranger

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
THE TRUCK IS RUNNING OK NOT MISSING AND NO LOSS OF POWER.
(2) Answers
first off what are these codes. and sometimes momentary malfunctions will register a code. so find out what these are and please post them