My Lexus safety and emission test said Not-Ready. I was told to drive it. but it shuts off? what do I do?

no info generic answer depending on vehicle p1773 has different meanings C2116 is an abs fault your test sheet will show reason for failure A I M is safety also look at sheet and or notify them as to reason your unknown vehicle failed

For OBD 2 there are thing's the cars computer check's for emissions , there called monitors . When these monitors run an set the vehicle will be ready to pass an emission test . OBD Readiness Monitors Explained OBD Auto Doctor Scantool Garage Read this if you would like to know more . Normal driving will set the monitors in time or you could try an speed up the process with a drive cycle

the computer meters fuel based on a signal from the coolant temperature sensor. The check engine light sometimes does not come on when the sensor fails.If the sensor is causing your problem you will have a strong odor of gasoline when the car starts,It will be slow to start the first time, turn it off and it will start right up. lol

Some vehicles are made with built in safety features to either not allow the vehicle to start or move if something serious is wrong. Don't know about the exhaust emission but could be in computer software to disable in case of excess emission. Could just be a bad O2 sensor. Need to fix the emission code problem, reboot the computer and try again.

It has nothing to do with Miles and EVERYTHING to do with Drive Cycles.. There are certain things that must be tested. Within the first 10 miles, generally speaking you are going to complete the Drive Cycle requirements for ALL the tests except for 2-3. The EVAP/ O2 normally the last ones to get cleared.

Your Vehicle is a 1999 which means that you can pass the I/M test with 2 lights "NOT READY". The EVAP is going to take longer than a few miles, you must fill up your car with fuel above the 3/4 mark and then it has to go below I believe it is 1/2.

But if there are 2 Not Ready's... it will pass

They should have been able to do it in the shop. Some of the sensors will reset everytime you turn off the car so that may well be whats happening. Try another emission place and see what they say but do not tell them you were "just at another place"

This is the biggest flaw in emissions testing. It takes 4 tanks of fuel and 1000 miles of wasteful driving to reset the computer on the FORD TAURUS (I've got a 2000). So much for pollution control!

Under the hood, there is a fuse block. I believe it is on the driver's side of your vehicle. Open that box, and pull the "ECU" fuse. Leave the fuse out for at least 5 minutes. Put the fuse back in, start the car, and let it idle for at least another 5 minutes. Do not drive the car, touch the gas, or even look at the gas pedal for these 5 minutes, as the ECU is remapping itself. This will properly reset the ecu and clear the codes. After this you may drive the car.

Hi:

We failed our emissions test as well, and went to the dealer to get the o2 sensor fixed. When I was paying the cashier told me that after such work, the car needs to drive for a while so the computer can confirm there are no problems, otherwise it sends out a code saying it's not ready to be checked. I was told 2 or three days.

is your check engine light on? if not you can bring it back in to see if the monitors are ready yet, the only thing you can do is drive it until its ready or the CEL comes on good luck and please rate -jeff