how do i check the engine control modular and repair it myself. on 2009 Dodge Caliber

had it checked at auto zone.codes 661 and 662 show for the ECM

Asked by for the 2009 Dodge Caliber
1 answer 1 comment
get a 2nd opinion instead of wasting your money.auto zone only gives you codes not a proper diag
THANKS FOR THE ADVICE, WILL GET SECOND OPINION ..