Thats the $50,000 question. It is not easy diagnosing todays engine faults because sometime all you have is a code and it will not point directly to a certain device. Did you drive your vehicle at least 50 miles and a couple of days to see if the check engine light goes out now that you tightened the fuel cap? The computer will not automaticaly reset the check engine light if you tighten the cap. It has to go through a certain amount of miles and cycles so it knows the problem is fixed so don't be too fast to rush to another fix here. If it stays on I start with an O2 sensor since it has a lot to do with emissions. That is where I go and from there diagnose that to see if it is working properly. Best I can do for you now...............
P0442 Code indicates Evaporative Emission System Leak detected (small leak). What are the causes? What components need to be repaired
If a check engine light is flashing that means an engine cylinder misfire has been detected
how to check fuse for horn in a 1998 Pontiac sunfire
cant you need a scanner to check codes from 1996 and newer
it probably needs an O2 sensor they range from about 40-90 dollars
check this site------>
camshaft sensor - signal low could be that or check the wiring to it. Other possibilities MAF or TPS
check if your battery is low than usual ..might be alternator problem
You mileage will vary dependent on the condition of your car, your driving habits and which engine/transmission you have. Check the web site below for exact specs. http://consumerguideauto.howstuffworks.com/1995-to-2005-pontiac-sunfire-6.htm
check your fuses first, then check your bulbs and then your relay.
Check the bulbs, check the fuse then check the switch.
check the owners manual
I have an 01 Pontiac sunfire and I have noticed that the check gages light comes on when the gas is low. I have never seen any other indicator come on for low fuel.
There is a trans dip stick on the back side of the engine. This is where you add fluid also. GoodluckJOe
I have a 1995 Pontiac Sunfire . The "check gages " light comes on when my gas tank is on empty. I dont know if this is a right answer but this is how I know I need to fill up at the gasbar .
You could be having a problem with your spark plugs and your dashboard is alerting you. You should have a mechanic check it out.
pontiac g6 check engine light car with wrench
check engine light means a problem with the emission system
No, it will not.
CHECK THE FUSE BOX UNDER THE HOOD OR CHECK YOUR OWNERS MANUAL THE FUSE SECTION
Check the main fusebox under the hood.
check down under the steering wheel at the bottom of the dash
Have vehicle scanned to determine the problem
check the piece of cardboard where the spare tire is. it should be on there
No - usually the Check engine light is for the emission control system