I have a 2001 Toyota Corolla Engine light on and stay When out side tempereture is cole. I pull out EFI fuse and put it back start engine and no Engine light over 70 deg. out side temp. It's come back in 55/60 deg. I took the car Auto zone for test and found code PO441. Please let me know how i fix it Thanks Shibli

no Engine told and is and engine questions (dead)14+ engines world wide. USA 1.8L or 2.4L (both fine chain cams)
asking how to test a fuse, we test them all, if engine cranks fast and will not start the engine and run and stay running.
best fuse test is , with a voltmeter,
both sides read 12vdc, key on.
Not only must the EFI work but all computers in the car must work.
and the communications bus works too. so all fuses are checked.
not just say 2 for the EFI PCM. see why"?
It's like a card house in some respects. (check all)

learn that some fuses are hot all the time (12vdc)
others only HOT key on. so test them all key on, lacking the service manual that tells these facts.
if fuses are all good
the cause is bad engine, bad, spark ,bad fuel. 1,2,3.
check spark, or do a spark tune up. (spark plugs old?)
check all spark plugs for spark not just 1, all dead is big clue.

check for fueling is last.

watch scotty, (weak on bad engine but tests are fast)
"my car cranks but does not start" << clear as day what's up.

https://youtu.be/064Ilsz8Fzg

one of his first posts.

also, , learn to scan any car that fails as it fails.
example:
connect tool to obd2 port
scan PCM,(obd2 port)
crank for 5 seconds.
release the key , no off.
scan again, even wait a few minutes for DTC to pop.
some call DTC codes but DTC means diagnostic trouble codes.
or errors.
sorry if your car is not in USA and is a diesel and my post is no good
sorry; but NO ENGINE (of 14) OR COUNTRY TOLD.
no VIN TOLD.

Adjustments - AutoZone

www.autozone.com/repairinfo/.../repairGuideContent.jsp?page...
AutoZoneBoth band adjustment screws are located on the left side of transmission, the ... 13: Automatic shift control adjustment-1989-93 vehicles with the 3.8L engine .... Ex. 04 Camry Battery See More Examples ... Explorer 4WD 4.0L EFI SOHC 6cyl; 2001 Toyota Corolla 1.8L EFI DOHC 4cyl; 2004 Infiniti M45 4.5L SFI DOHC 8cyl.

Check these two fuses. Fuse number 31 in fuse box location 4, if cigarette lighter, radio and clock. Else fuse number 5 in fuse box location 2, if only radio and clock and not cigarette lighter.

usually under the hood drivers side by the battery

I am having the same issue with my sister 2001 corolla. I pinpoint it down to the EFI and/or Engine Main relay. After you drive it for 30 minutes it just shuts off. Try disconnecting the EFI fuse (15 A) for 30 seconds. This will reset the ECU which is going into Limp mode due to relay malfunction. Let me know if it works, i am going to change the relays on my sister's car tomorrow and recheck.

the sensor can be faulty, test it with VOM see the diagram attached from toyota
God bless you

Driving the car will not clear this trouble code, it has been stored in the ECU. You must remove the EFI fuse from the engine bay relay block for at least 60 sec, or disconnect the battery for that time.

Hello! The fuse is located in under-hood box #2...Face the front of the vehicle ...It is on the drivers side fender wall, about mid-engine..It is called the "dome" fuse; 15A

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

pull the E.F.I. fuse located under the hood on the drivers side, if there is more than 1 efi fuse pull them both along with the E.T.C.S. fuse (if there is one) for 1 minute or so. That should do it

THE CHECK ENGINE LIGHT IS CONTROLED BY THE COMPUTER FROM INPUT SENSOR FOR THE EMISSION SYSTEM , IT IS ASSUMED THAT IF A CARS EMISSION SYSYEM IS FAILING THERE IS A POTENTIAL MALFUNCTION IN THE ENGINE. ONLY A DIAGNOSTIC CAN TELL U WHICH SENSOR IS MALFUNCTIONING.