How to reset the check engine light on a chrysler concorde 2001

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Check fuses for heater fan.

Fuse Box Diagram Chrysler Concorde / LHS (1997-2004)

https://fuse-box.info > chrysler > chrysler-concorde-19...
Fuse box diagram (location and assignment of electrical fuses) for Chrysler Concorde / LHS (1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004).

Check coolant level.

any parts store can do it

You have a check light on

What codes have you retrieved?

What testing has been done?

Yes, you will need to buy a scanner from Autozone, should cost around $60. It will not only allow you to erase the problem and remove check engine light, but you can find out whats wrong and fix the problem. Hope this helps.

code p0601=Internal Control Module Memory Check Sum Error
did you replace the parts with the same size engine and trans.
it sounds like the computer isn't recognizing them,
or the computer is faulty

try by starting off with getting a computer scan for diagnostic trouble codes.ther should at least be a history code stored. it sounds like maybe a cam sensor problem , but the scan should shed more light on the course of repair.
good luck chris

P0455 Evaporative Emission Control System Leak Detected (gross leak) - check your entire engine bay contents for any type of leak, air conditioner when it's running, coolant, things like that.

P1684 Battery Disconnected Within Last 50 Starts - this is a code that will go away over time

Check your EGR valve and your IAC Idle Air Control valve make sure both are functioning correctly

Here is a website http://www.diyrepairmanuals.com/products.asp?cat=1405 for a new one.
Check the junk yards and see what is there. LHS is the same body, and 3.2 & 3.5 motors are almost the same. 2004 Concorde is same body with LHS grill & backup lights. 300M 2000, 2001, 2002, 2003, 300's are same body except shorter trunk, with 3.5 motor, same as LHS

change the oil pressure switch or the wrong oil