SES on 2006 Chevy Cobalt Car
2.2 L 4 cylinder
SES Check engine light
GM tech = jk
question = The check engine light is on in my 2005 Chevrolet Cobalt 4 cylinder. Is this
something to worry about. The car runs just fine and starts good. Any damage if keep
driving like this. I am out of work and really cant take to a shop to tell me what is wrong,
then sell me a bunch of parts and service. Thanks for any help.
JK:
Any time a check engine ( SES ) light comes on the dash, the computer system is
seeing a problem in one of the emissions or other systems. When the light comes on, a
'Trouble code' is stored in memory. Even if the light goes out, the code is still in the
PCM (Powertrain Control Module).
There are many, many things that cause this light. The first step is to have the system
scanned for codes with a code reader. This can be done for free at many of the large
national parts store chains. Then diagnostics of the system needs to be performed.
Just because a code is related to a particular sensor, does not mean that senor is
faulty. Many things can cause codes to be set for a sensor or system that is not related
to the codes set. Example: an oxygen sensor codes does not necessarily mean the
oxygen sensor is bad. The problem could be with another sensor, misfires, vacuum
leak, fuel quality, etc.
2.2 L 4 cylinder
SES Check engine light
GM tech = jk
question = The check engine light is on in my 2005 Chevrolet Cobalt 4 cylinder. Is this
something to worry about. The car runs just fine and starts good. Any damage if keep
driving like this. I am out of work and really cant take to a shop to tell me what is wrong,
then sell me a bunch of parts and service. Thanks for any help.
JK:
Any time a check engine ( SES ) light comes on the dash, the computer system is
seeing a problem in one of the emissions or other systems. When the light comes on, a
'Trouble code' is stored in memory. Even if the light goes out, the code is still in the
PCM (Powertrain Control Module).
There are many, many things that cause this light. The first step is to have the system
scanned for codes with a code reader. This can be done for free at many of the large
national parts store chains. Then diagnostics of the system needs to be performed.
Just because a code is related to a particular sensor, does not mean that senor is
faulty. Many things can cause codes to be set for a sensor or system that is not related
to the codes set. Example: an oxygen sensor codes does not necessarily mean the
oxygen sensor is bad. The problem could be with another sensor, misfires, vacuum
leak, fuel quality, etc.
Todays GM vehicles use many sensor, switches, solenoids, and other
electrical components to control or monitor every aspect of the engine.
From controlling the fuel and ignition systems, to monitoring the emissions.
A problem in any of these systems, or subsystems, can cause the check
engine light to come on.
electrical components to control or monitor every aspect of the engine.
From controlling the fuel and ignition systems, to monitoring the emissions.
A problem in any of these systems, or subsystems, can cause the check
engine light to come on.
Comments
| 8-7-11 The plastic air filter cover the carb has a broken holes,where would I have one of these cheap. The dealer is asking more than i can offered to pay and I can not find an auto salvage place that has one. Thanks for any help you can give. I am unemployed, and my car fail the emission test to get new tags. Also, have troubles with oxygen sensors. |
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