P-0129 obd2 code means barometric pressure is out of range p-0339 says crankshaft position (ckp) sensor is intermittent.. go to auto zone .com and type in your vechile info and then look for a ckp sensor buy and replace.your pressure is off because of a bad sensor. disconect the neg on your battery, add new sensor, replace neg terminal back on battery.. then erase the two codes with a obd 2 code reader after installing new sensor. if you dont have a code reader pick one up at auto zone as well. its the best tool u can have.. no one will rip you off at the shop when you walk in their knowing what the problem is.. and you cant put a price on knowlage.. oh wait you can $ 49.99
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