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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
How do you diagnosed service engine soon light on in your 2002 suzuki aerio?
Take it in Or buy a Scan tool and check it yourself!
Check engine code 1995 Nissan truck?
You might find help here;
http://autorepair.about.com/library/ts/obd-i/bl-dtcs-88a.htm?once=true&
What causes high purge flow in EVAP canister system?
The EVAP Canister System is the system that purges the gas tank of most air in it, making it a vacuum and keeping the lines fairly void of anything but gas. Unfortunately, unless your going to be able to give all the codes from your check engine light andd remove the exhaust to get to the gas tank, this is not something you will be able to fix on your own or I can even nail down to a specific item that is messed up.
Will you pass NJ inspection with an airbag light on?
You will not pass inspection in NJ with an airbag light ON. If you owned the car when the light came ON and your airbags have not previously deployed, this could be a sensor or wiring problem. If you need new Airbags, the repair could be as much as $1000. Most mechanics will charge 1 hour labor for diagnostics.
Why does the engine power reduced light come on in a 2005 Chevy Cobalt?
Check the gas pedal. My daughters engine power reduced message came on and we thought it was the battery and alternator. We replaced those and the car still was doing the same thing--(loss of power only would go 50 mph). We were told it was the gas pedal. We had it changed and the sensor changed and the message went off her display and has been running ever since. H
Motor oil level, and Motor oil Pressure
**************************************If that looks OK, try www.vehix.com
How do you reset engine light 2005 ford focus?
Unhook the battery, overnight, and in the morning, rehook it. Make sure poles are clean.
How do you fix P0420 catalyst efficiency below threshold?
Check for exhaust leaks, test oxygen sensor operation, replace the catalytic converter.
1995 f-250 check engine light shifts hard?
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
What is wrong when number 4 cylinder misfires on a 2003 cavalier?
Misfire
Answer
Faulty: spark plug, spark plug wire, ignition coil, ignition module, fuel injector are the most common. Coolant leaking into a cylinder is another.
Internal engine problems such as burnt valve, broken valve spring, bent push rod, worn rings
HO2S Heater Control Circuit Low Bank 1 Sensor2
symptoms
Other than the MIL light illuminating you may not notice any performance issues.
cause
A short in the O2 sensor heater circuit or the sensor itself
A faulty O2 sensor heater
Wiring or connectors are broken or frayed to the sensor or relay
Bad PCM or ECM
The fix
Correct wiring short or loose connector found in inspection.
and/or
Replace the bank 1 sensor 2, O2 sensor
Replace PCM if circuit has failed and no wiring issues present, good O2 sensor
How many miles do you have to drive a jeep after you reset check engine light to pass emissions?
you need to drive between 40 ti 50 miles to pass emission test , if the light comes back before that , you need to fix your car
When the engine light comes on what is it?
Assuming you are referring the the Check Engine Light, it can be many things. The check engine light is on because the ECU has detected a problem with the emissions system. Have the ECU scanned with an OBD2 scan tool which will retrieve the code that has been set. This code will tell you what part of the emissions system is being effected.
Why does the engine die and then run fine after 5 minutes?
One common problems is a plugged catalytic converter, if the engine starts fine and then starts to stall or feel like it does not have any power after running for a while it could be the catalytic converter.. the engine starts loosing power because the exhaust has nowhere to go (the catalytic converter is partially or totally plugged) Compression starts to go down causing the engine to stall or die. If you leave the car alone for a while the pressure in the engine goes out slowly thru the catalytic converter leaving the car ready to start again for a few minutes but it will shut down again.
Can dirty gas cause the check engine light to come on 2006 Saturn?
no that shouldn't make the check engine light to come on but that's not good on the fuel pump i would change the gas in the tank
This code means that your catalytic converter efficiency has dropped below the nominal value. p0420 is a generic code for the catalyst to indicate that you need to investigate a potential problem with your emissions system associated with the catalytic converter.
Code P0420 means "Catalyst System Efficiency Below Threshold (Bank 1)"
P0420 is actually Catalyst System Efficiency Below Threshold Catalyst System Efficiency Below Threshold.
This means that the secondary O2 sensor detects that the catalytic converter isn't working as efficiently as it should.
This engine code can be triggered by any one of the following:
1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged.
2.) The secondary O2 sensor is malfunctioning.
3.) There is an exhaust leak.
4.) The computer unit is faulty.
Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
Code PO420 is catalytic converter efficiency low bank 1, sensor1. You did not state as to the year,make and model of the car as well as the engine size. I am a member of IATN and the majority of there fixes was related to someone installing an AFTER MARKET converter. There is a big difference. I strongly suggest that you go to a repair shop with the proper equipment as well as a very good tech to diagnosis the problem. You could replace parts and never fix the problem.jd1709
How can you reset the service engine soon light in a 2003 trail blazer?
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
What does a flashing engine light mean in a peugeot 206?
This could possibly be the engine management light if so it means the system has detected a fault. The car needs to be connected to diagnostic equipment for fault diagnosis and the light to be re set.
Where is the fuel filter on a 1988 Dodge Aries?
On the 1988 Dodge Aries 2.2 liter TBI 4-cylinder, the fuel filter is mounted on the frame in the fuel line. Look under the vehicle below the trunk area on the passenger side. It is next to the fuel tank.
Visit an auto parts store that has the computer that will read the codes that these lights represent. Then, you will have an idea as to the problems you face. Anti lock sounds like brake issues to me and PCS (Precision Control Steering) may affect your power steering. At the least, you should check your fluid levels.
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
How do you test if your check engine light works?
When you turn the ignition key to the run position , just before starting your Explorer , the check engine light should come on for a few seconds to prove that the bulb works
