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Originally Posted by impressive1
My wife's 2002 Intrepid set a check engine light about a week ago. I completed the diagnostic test using the key on/off 3 times method and it showes a cod P0440. Can anyone tell what this code is and what to do about fixing the problem. I also printed the list of codes from page 1 of this forum but it lists only 2 digit codes whats the deal between the 2 digit codes and the P 4 digit codes.
Thanks
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P-4 digit codes are OBD11 codes.
Your code is for a EVAP emissions fail test code.
Some cry PCM systems will give both OBD1 2 digit and 4 digit OBD11 or manf. spefic codes.depending on the test method.
The 4 digit OBD11 codes give better detail of the problem.
http://www.troublecodes.net/OBD2/
After you get the code get some good repair info on the repair flow chart for the code.
A good factory repair manual or
http://www.alldata.com/products/diy/index.html
Will take you threw the repair procedure for what ever code you have.