My 03 galant engine light went on for a while before I got the codes checked from Autozone. Did not expect to get two codes. Would really appriciate for any clues or suggestions about the two codes.
Code 1. P0135, heated oxygen sensor, bank 1, sensor 1. For this code I think I'll have to test the oxygen sensor. My question is where it is located. From what I checked, sensor 1 should be the one that I can see easily when opening the hood, just in front of the engine and pops out. Is that right?
Code 2, P0740, TCC system malfunction. For this problem I really don't have much clue. I would really want to know how severe the problem is. is it just lowers the gas mileage or it can lead to other more serious damage to the transmision or other parts?
Any useful information is greatly appreciated!!!