Review Of 1998 Toyota Corolla Check Engine Light Flashing References. Ideally, you will want to troubleshoot the vehicle and check the dtcs to find out what’s causing the issues. An aftermarket alarm, exhaust or divergent item can wreak havoc on your toyota corolla if it’s not installed subsequently.

Ideally, you will want to troubleshoot the vehicle and check the dtcs to find out what’s causing the issues. Web the good news is that the check engine light indicates that there are diagnostic trouble codes (dtcs) stored in your corolla’s computer, which is a very good thing. When the check engine light is flashing in corolla, it indicates that there is a significant problem with the engine that requires immediate attention.