The engine check just came up this evening.
I had a flat battery on it overnight and I was able to jumpstart but while coming from Lagos in the evening, the engine check light came up and I wanted to take it to my technician but feel like sharing with the house about likely things cos i really don't trust those guys. The ABS light has been up for awhile, I also noticed the battery indicator light came up on the dashboard. its a 2001 Camry Envelop

Battery run flat that was due to charging system hence your battery sign is showing, most likely your alternator is gone, as for abs get your car scanned and find out if the problem is the module or the wheels sensors finally engine management, get the car scanned and you should have a code pointing to something

Have it scanned. Check voltage output of alternator, check drive belt and tension. For your ABS, supposing no mechanic has tampered with the system, have it scanned, you should have a good idea of what's going wrong.

Thanks for your input. Its now fixed.