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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

Where is obd port for 2000 grand am for body or chassis codes One under dash shows no codes but service vehicle abs and etc lights are on?

Unfortunately you are going to need the manufacturers scan and diagnostic tool to be able to read your ABS or body codes. GM uses a scan tool called a tech 2 for abs, etc, air bag, and all body related codes.

Can service light cause uneven idling?

No, but something that could cause uneven idle could cause the check engine light to turn on.

No, but something that could cause uneven idle could cause the check engine light to turn on.

WHAT WOULD CAUSE Number one and six cylinder miss firing CHANGED ALL PLUGS AND COIL PACKS?

Depending on the manufacturer, many coil packs mount on a large transistor plate that actually fires the coil pack. It's not uncommon for those transistor plate to fail.

P reg vectra when you turn the ignition on a light stays on the dash it has a picture of an engine with a bolt of lightning in it what does this mean?

It PROBABLY means a problem with the charging system. Take the vehicle to a local auto parts retailer, such as Auto Zone or Checker Auto and have them connect the charging system diagnostics. If it's not the charging system, the computer is telling you that SOMETHING is wrong and you need to check the computer to see what it is. Borrow, rent or buy an OBD2 diagnostic code scanner and see what it says.

its your engine management light it means there is a problem with a sensor most commen faults are air mass sensor,cam shaft sensor,crank shaft sensor,egr valve or idle speed contral valve hope this as been helpfull!

Check engine light is on engine bogs down 2002 Chevy trailblazer?

There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.

What is p0303?

Trouble code P0303 means:Cylinder 3 misfire detected

What is Georgia law on purchasing a used vehicle with a check engine light on?

See www . CleanAirForce . com

The new 2012 Q&A pamphlet shows emission testing is required in 13 counties in Atlanta metro area for all cars and light duty trucks manufactured 1988 thru 2009. State law prohibits selling a car or light duty truck to anyone in these counties until it has passed a current year emission test. The vehicle for sale must have passed the test, it cannot be "emission test ready". If the current emission test certificate has been lost, go to www . CleanAirForce . com, input the VIN# and print the certificate.

What do DifprePe means on check?

"DifprePe" on a check typically refers to "Different Presentment," which indicates that the check is being presented for payment in a manner that differs from its original terms or presentation. This could involve changes in the way the check is processed or the institution handling it. It is important to check with your bank for specific details, as interpretations may vary.

What does a engine symbol mean on a vehicle?

ANSWER: It is the check engine light. It starts out a yellow meaning that there is some thing going on and have it looked at soon. If by chance the little engine light is red, this means do not drive your vehicle until you have it serviced. There are many things that could cause this to happen from fueling the vehicle with it running , a sensor not functining properly, or a major engine problem. It is not to be taken litely if it is red, you could severly damage the engine if you ignore it.

Why is your husband's 2001 Ford Explorer Sport's check engine light blinking?

If the check engine light is blinking that means an engine cylinder misfire has

been detected ( you will need to have the vehicle scanned for any trouble

codes to help diagnose and then repair the problem ) You can drive the

vehicle in for repair , just avoid any rapid acceleration or deceleration because

you can damage the catalytic converter

Would a bad manifold gasket cause gross vacuum leak at the intake?

Yes. If an intake manifold gasket was not installed properly or has somehow become damaged the engine will pull air through the opening.

In a 1994 Chevy lumina which ports do you ground in the diagnostic connector to get the check engine light to blink the bad code?

Just found it myself. Short the top two on the right side. Have the ignition turned to "on" and then do it. You get X number of blinks, a pause, then more blinks.

Mine was 1 -pause- 2. 12 for me!

What tool is used to check horizontal trueness?

You Use A Lever

CORRECTION:

You use a LeveL, not a LeveR.

LEVEL!

Why is Orange s sign flashing light mean?

An orange flashing light on a vehicle typically indicates a warning or caution signal. It's often used to alert other drivers of a potential hazard, such as a slow-moving vehicle, construction zone, or emergency situation. In some contexts, it may also signify that a vehicle is about to make a turn or change lanes. Always exercise caution and be aware of the surrounding environment when you see a flashing orange light.

What means the code p2191?

too lean at higher load

- Leaking fuel injector or pressure regulator

- High fuel pressure condition

- Faulty front HO2S

- Leak in exhaust system

- MAF sensor faulty

What does it mean when the emission light comes on in a 2000 Ford Focus?

It means that the computer has detected a fault and has stored a problem code. You can use a code scanner to find out what's wrong. It's probably something like an oxygen sensor, EGR valve, MAP sensor or something else that affects the emissions, but you won't know for certain until you check for the code.

What is trouble code P0455?

Trouble code P0455 means:EVAP Large Leak Detected

Large vapor leak in the evaporative emmisions system

Trouble code P0455 means: Evaporative Emission System Leak Detected (gross leak/no flow)
Large vapor leak in the evaporative emmisions system

Why does the service engine soon light come on 2001 Chevy Blazer LS 4WD?

When was the last time the oil was changed? My sister's minivan has that message displayed every 3 months. She takes it into the dealer and has the oil changed,which fixes it. There might be a faulty sensor sending a signal to the computer, causing the Service Engine Soon light Your Secondary Air Pump may be bad. Water gets into the pump and causes it to short out. If you get this replaced, make sure you get the breather vent extension kit installed or you'll have the same problem again in few months.

How do you reset the service engine light and the low washer fluid light?

To Reset the lights disconect the negitave lead on your battery for about 5 to 10 min then reconnect, it light is still on then you could have a bad sensor.hope this helps, Even easier.... on the fuse panel..remove the fuse for the Electronic control module for 10 minutes ( does the same thing as disconnecting the battery) then push it back in..should clear any stored codes