My 2001 Corolla check engine light came on and the dealer said it needed an evap canister, pcv, and efi serv. What are they short for?
Evap canister is short for evaporation canister. This rids the engine of any excess humidity. EFI Serv is short for Electronic Fuel Injection Servo. This controls the amount of fuel being delivered to the engine and injected into the cylinders. If these are broken you may notice the engine runs roughly. Shop around for getting these replaced as dealers normally charge too much.