How does the Check Engine light work on a Cavalier?

The computer in the Chevrolet Cavalier stores codes and turns the check engine light on when one of the sensors malfunctions. The engine light alerts the driver to a problem, as not every sensor malfunction causes the vehicle to run poorly. You need a scanner to extract the codes from the computer, which you can find at most auto parts stores.

Where do I find the trouble code on my Chevy?

These are listed in numerical order for easy searching. When retrieving Chevy trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3.

What is the OBD2 code for a Chevy?

OBDII Chevrolet Code Definitions. Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

What causes black smoke coming from a diesel engine?

Black smoke is the most common smoke color coming from a diesel engine and most likely indicates something is wrong during the combustion of the diesel fuel. When diagnosing the problem the first place to look at is the mixture of air and fuel flow into the cylinders.

What causes black smoke in the combustion chamber?

Piston Rings are designed to prevent the infiltration of engine oil inside the combustion chamber. If there is any problem with the piston rings, the engine oil starts flowing into the combustion chamber. The combustion of the mixture of this engine oil and the fuel delivers black smoke. 6. Engine Deposits

What does Blue Smoke mean when starting an engine?

The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.

What does it mean when you have black smoke coming from your engine?

Black smoke indicates an engine air-fuel mixture that is too rich — meaning there’s too much fuel and not enough air. This is typically caused by one or more of the following problems: Faulty fuel pressure regulator: As the name implies, this device regulates fuel pressure to the engine.

What does it mean when your car has blue smoke coming from the tailpipe?

Blue-gray or gray-white smoke. Blue-gray or gray-white smoke usually means the engine is burning oil. If you have a turbocharged engine, a faulty turbo seal could be causing this, but if you have a more common engine, it’s likely one or more of the following problems:

What does smoke coming from the back of a car mean?

But if something is amiss, you’ll see a cloud of smoke coming out of the back of your car. There are three common colors of exhaust smoke emitted from a gasoline-powered engine: Black smoke indicates an engine air-fuel mixture that is too rich — meaning there’s too much fuel and not enough air.

What is the diagnostic code for a Chevy check engine light?

Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Chevy diagnostic trouble codes. Manufacturer Specific Codes P0342Camshaft Position Sensor A Bank 1 Low Input – Related Information P1031HO2S Heater Current Monitor Control Circuit Sensors 1

What is the oxygen sensor code for a Chevy?

P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Trouble Code P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Check Engine Light Code

How to read a GM check engine light code?

It will look like Morse Code, but it isn’t, and is real easy to interpret. The first code that will flash will be a code 12. It will be “flash, pause, flash, flash, pause, pause,” and repeat the cycle three times. The ECMwill flash each code three times, and move on to the next. If you have no codes stored, it will keep flashing code 12.

Where to find diagnostic code for Buick check engine light?

1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3. Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).