Answers: Do a quick rummage through of AutoQnA.coms for 'check engine light', and see how people enjoy asked the same cross-question.
To answer your question, a immediate refresher on modern engine management systems is within order.
The computer that controls the engine monitors several sensors to determine things such as how much fuel to deliver to the motor, when to fire the spark plugs, etc. When it recieves an impressive reading from one of the systems it monitors, the computer takes minute of that fact, stores a code contained by it's memory which indicates which system the fault occured contained by, and illuminates the Malfunction Indictaor Lamp (MIL) -this is the 'check engine light'- to notify the driver. This system is call On Board Diagnostics, or OBD. Starting in 1996, adjectives vehicles be required to be equipped with what is agreed as On Board Diagnostics-Generation 2 (OBD-II).
Typically, check engine codes are retrieved by plugging in a diagnostic tool into a port underneath the dash, which next retrieves the stored code. The technician can then diagnose the artificial system. Ever since OBD systems were introduced, Chrysler have allowed owners to retrieve codes without special tools. This is done by turning the ignition on and sour five times in nippy sucession. The check engine light will originate to flash to indicate the ID number for the code stored in the computer's memory. For example, two flashes, followed by a time away, then five flashes would indicate code number 25. On newer vehicle with digital odometers, the code is diplayed on the odometer readout.
Due to the electronic disposition of the system, there is a great deal of misconceptions about the check engine wispy. Lots of people atuomatically assume that a check engine fluffy means that one or more of the engine's oxygen sensors (which assistance the engine run efficiently and dampen emissions) need to be replaced.
Wrong.
Yes, the O2 sensors could come to nothing, which would cause the MIL to come on, but the OBD system monitors copious things. It could be no more than a loose gas cap. If you cannot read the code using the ignition switch (as far as I know, Chryslers still enjoy this feature), your local Autozone, Checker, Pep Boys, etc., will read the code for you free of charge, which takes roughly five minutes. Once you know what problem caused the MIL to illuminate, you can take the necessary steps to fix the problem, and the parts store individuals can delete the code from the computer and turn off the MIL.
If you obligation a list of Chrysler 'check engine' codes, www.allpar.com have a list of codes and their meaning. HTH.
This question can not be answered so please do not listen to anyone relating you they have 25 years exp and so on. Take it to Auto Zone they'll scan for codes on your vehicle free of charge!!!
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