Cycle the key to the ON position, then to OFF, then to ON, then to OFF then to ON and leave it there. Where the miles are normally displayed a letter P and a set of numbers will come up. EX: P0303. Once it says DONE it is done displaying the codes. When you have the code(s) use Google to look them up. "2004 Dodge Neon trouble codes".
End of message, no codes present.
You need to have the engine and abs checked for codes.
You hook up a scanner and check it for codes.
go to autozone to ask to check your codes
See link below for a complete list of trouble codes.
There are pages and pages of things that can turn the check engine light on. You need to have it checked for codes to know what the cause might be.
That is the check engine light. You will need to have the system checked for codes to know posssible causes.
The codes are read with an OBD2 scanner.
There are pages of causes, you need to have it checked for codes.
http://www.knizefamily.net/minimopar/fault/index.html there
There are pages and pages of causes for a check engine light. You need to have it checked for codes with a scanner to know what to diagnose. After the repair you can clear the code with a scanner.
Have vehicle scanned to determine the problem and have codes cleared