Pull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self test the computer runs the car through, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist. It is emission related. We just found out that the check engine light on our 1993 Toyota Pickup is due to a bad "knock sensor".
Low fluid levels in engine.
Problem with the emissions system.
your oxygensensor is bad ,its screwed in to your exhaust manifold, about 30.00
You add automatic transmission fluid to a 1989 V6 3.0 Toyota pickup truck through the filler tube in the engine compartment. This is also used to check the fluid level.
Check coil pack.
It could be anything, but the most common problem is the O2 sensor.
how to discontect the engine light on a 2001 toyota camery ?
Check fuses and relay if you have one.
Check the pickup inside the distributor and see if its OK. Do you have spark at the ignition coil? Check the wires. Or the cap and rotor assy.
it means you need to check the engine
Check your engine. Check your fluid levels and add if needed.