How to reset computer on Saturn 2001 LS - did not pass air pollution test. Three codes came up P0133, P0341, P0442. The car runs fine. Check engine light is on.

Check purge valve that could be stuck open

Having codes read is a waste of time, if you don't understand
or work on vehicles

You need a shop to properly diagnose it,you know that

Any codes can be Googled to look them up

Type: OBD & the code

Codes have little to do with replacing parts

No parts get replaced until they are tested & fail a test

CODE PO113 - INTAKE AIR TEMPERATURE SENSOR INPUT ABOVE MAXIMUM ACCEPTABLE RANGE. CODE PO133 - UPSTREAM OXYGEN SENSOR RESPONSE SLOWER THAN MINIMUM REQUIRED SWITCHING FREQUENCY. CODE PO341 - CMP SENSOR SIGNAL RANGE PERFORMANCE CONDITIONS. POSSIBLE CAUSE COULD BE CAMSHAFT POSITION SENSOR FAULTY OR PCM FAULTY GOT TOO MANY CODES. LET DEALERSHIP CHECK IT OUT USING DIAGNOSTIC EQUIPMENT. YOU DONT WONT TO BUY ALL THOSE SENSORS IF PROBLEM ELSE WHERE THE COST WILL ADD UP THAT WHY LET DEALERSHIP CHECK IT OUT.COULD BE THE PCM OR SHORT IN WIRING.

Testing the the O2 sensor an other vehicle testing procdures should be done before replacing parts . The rear o2 has nothing to do with this code .
P0133 Testing H02 Sensor

Hello ihatethiscom: My name is Roger and I will help you. The code p0341 Is for the camshaft position sensor There are several things that can cause the code. A intermittent engine misfire to a camshaft sensor problem. I always look for the simple problems first. A lot of people look at the sensor as being the problem not always so. As for the code p0442 this is a fuel evaporator system problem. This has several options when it comes to finding a solution. As I said try to look for the simple solution. A loose fuel cap can set this code also. A dirty fuel vapor canister or a cracked vapor line could cause the code also. What the code is saying is there is a small vacuum leak to the fuel tank. Should you need further help please just ask. Please rate the answer you received. Thank You for using Fix YA. Roger

ok now for starters, we will go with the most probable:P0341 crank position sensor. chances are it needs to be replaced. 2nd your check engine light has probably been on for a while right?! the P0133 is an o2 sensor code and would probably be good maintenance(but get it to run first. 3rd P1599 refers to it stalling out which if it died while running would most likely trigger this. and last but not least either your coolant level switch is faulty or you really do have low coolant. let me know.

is this a 4 or 6 cylinder?
if a 4 cylinder it will only have 2 o2 sensors
V6 will have 4 o2 senors which the sensor will be the right side of the engine first sensor.
1st sensor on exhaust, I recommend if you change one change all, as this will make the computer when it rechecks the system you have all clean/fast responding sensors.

if you have a slow response it means the sensor is dirty and not reading well, which is usually caused by minor misfires that the engine computer dismisses, so a tune up would be recommended too.

Hello DTC P0341 & P0133 very common saturn Codes.You need to check condition of Plugs & wires,If not New Replace All Plugs & Wires,also I would replace the #1#4 Coil for the P0341.For the P0133 Reaplce your front O2 sensor with an OEM sensor,not an aftermarket.

check all your fuses, there may also be a code about to set. the timeframe depends on your driving habits. or it could be the garage you are taking it to. ask them for a "drive cycle" printout. this is a form that explains the exact driving conditions for your vehicle to reset the monitors. you could also try taking it to autozone- they can tell you if it is ready or not.

You can check every connection if you want, but the smoke test is your best bet............