There are hundreds of different codes that can cause the check engine light to come on. It needs to have a code reader hooked up to find out the specific code. Most auto parts stores will do this for free.
Toyota engine code 402
How do I get engine codes for 1999 toyota corolla?
Go to----- http://www.extreme-check-engine-light-codes.com/Toyota%20OBD1%20Decoder.htm---- for this info
The check engine light is reset with a scan tool after repairing the failure that caused the trouble codes.
When the light comes on it's telling you to read the engine diagnostic codes.
Engine check light comes on, and you have the codes read.
Jumping the pin connector on the ECU will allow the check engine light to flash on the dash console. The check engine light will flash repeatedly and show codes.
Check the car computer for error codes, google them.
There are thousands of reasons. You need to pull out error codes. You can do it at local autozone store.
You need an OBD2 code reader to check the codes. Just plug it in under the hood and read the codes. Use the manual to determine the codes.
If the engine is running good except for low power, low cylinder compression could be the problem. A computer test may show and possible engine codes as well, giving a starting point for troubleshooting.
well..............what are the codes?