Have a code Po441 where is the sensor? does a menchanic have to fix it? trying to get car to pass emmission

O2 sensor malfunction

when you take the car back for emissions test, try this trick. keep in a lowish gear with high revs when you take it. 9 times out of 10 this will work long enough to get it through the test

well auto zone needs to diag cars like i need to be a brain surgen . what code do you have if its p2181 yout thermostat needs to be replaced what happens is the thermostat stays open too long and the engine sees that and it will set in about 2 to 3 drive cyles your pcm looks at all sensors all the time to keep emmisions down and your milage will pick up when it is replaced

You have codes for a failed exhaust converter,PO420,
EVAP System problem PO440,Incorrect Purge Flow PO441,
Evap Vent Control issues,PO446

Your car is all messed up

That should have been all checked, BEFORE you spent time
in line for inspection

If all the codes are for real & not a false report

You will need new spark plugs,ignition & fuel checked,
new exhaust converters,new evap purge valve,new evap
vent solenoid & possibly vacuum leaks resolved

You either bought someones neglected vehicle or never
do a thing but drive it

May be easier to get a different vehicle,your repair bill
will start at $1,000 & go up, from not being proactive & taking
care of what is required in owning any vehicle (lack of knowledge)

You will need the oxygen sensors also & no, they won't fix the
amount, of what appears to be several failed items, all at one time

So much for Toyota being better than other vehicles

Answered the other similar question

Hi,

Code P0741 = Torque Converter Clutch Circuit Performance or Stuck Off. This relates to your transmission only and has nothing to do with Exhaust emmissions.

If failed smog test, there must be an issue within your emmission system, e.g. sensors etc

You will need to have your codes read again, or have your vehicle properly inspected.


Cheers,

This code relates to the knock sensor circuit. Replace the sensor and the light will go out. This will allow the engine to pass the emissions test. Hope this helps...

Putting miles on them wont reset the computer. It is how many times you cycle the key on and off. And they will only reset if the problem was fixed. I don't know how many times yours has to be cycled, but some vehicles are up to 100 times. Hope this helps.

When all the monitors have run their tests then it will pass emmissions providing that your repairs were successfull...You need to drive it for at least 75 miles so that it can complete its tests....

change oil and filter put a emission cleaner in fuel