2004 Toyota Corolla Q&A
2004 Toyota Corolla Question: Service Engine Light
I took my toyota corolla in for three diagnostic tests because my service engine light was on and all three said I needed to replace the gas cap which I have (two of them being Toyota gas caps) well now the service engine light is back on again only a week after Toyota put a new gas cap on; what could this be? They said they checked the one other thing it could be and it looked fine. - Tonia_1
Do you know the number of the fault code that is triggering the service engine soon light on your 2004 Toyota Corolla? If the code is for an EVAP system leak - large or small leak, and replacing the gas cap has not corrected the fault then the EVAP system should be inspected for a leak using a special tool that will inject smoke into the system. When the EVAP system is properly sealed there will be no smoke escaping anywhere and the system will hold pressure. Toyota's have issues with the EVAP vapor canister so be sure that has been thoroughly checked. - Oakman
Check light just came on stays on but soesn't drive different. What is involved in servicing and about how expensive to fix. I bought extended warrenty with car 5 month ago.
how do I reset the check engine light or maintence required light?
I had the following service done on my car- relace engine mounts. tune up, radiator hose. Two days later the engine light came on. I took the car to the garage. They took the car for a test drive ...
The Check Engine Light may illuminate due to an evaporative emission (EVAP) system fault. Our t...
The Check Engine Light may illuminate due to an evaporative emission (EVAP) system fault. Our technicians tell us these EVAP system faults can be difficult to diagnose but it is not uncommon to ...