On some cars it could, depends on code.
Its the code for the torque converter clutch solenoid.
A failed catalytic converter is one of hundreds of parts that can cause the check engine light to be on.
PO740 is a Chrysler specific code that involves your Torque Converter Clutch Circuit The problem could be in the TCC solenoid, or the torque converter itself.
torque converter clutch solenoid circuit
So the torque converter and oil cooler are full.
If you have repaired the cause of the light, the computer has to run the appropriate test and pass three times to clear the light.
(torque converter clutch circuit performance or stuck on)
If the torque converter bolts on a 1995 GMC 3500 with a 350 engine aren't lining up after an engine swap, it could be due to misalignment of the torque converter or the flexplate. Ensure that the torque converter is fully seated in the transmission and that the flexplate is properly aligned. Additionally, check if the correct torque converter and flexplate combination is being used, as variations in part design may also affect alignment. Lastly, inspect for any obstructions or damaged components that may prevent proper installation.
A flashing check engine light means that you have a problem with your engine that may cause harm to the catalytic converter.
A flashing check engine light is due to a condition that is causing catalytic converter damage. Normal cause is a severe misfireA flashing check engine light is due to a condition that is causing catalytic converter damage. Normal cause is a severe misfire
Will the engine turn over at all... if it doesnt then it could be the lock up torque converter solenoid... if the engine will turn is the starter working properly, if it is then check for fuel and spark to further eliminate the problem. Ive disconnected my lock up torque converter solenoid just to pretty much get rid of it, cause its bad when they start going bad, locking up when they arent surpost to and kill the engine... they can cause the engine to buck around on you.
It will cause the check engine light to come on with no benefits.