2006 egr lighting up re set day later on again what to do ?

Is there a knock in the engine? If the motor rattles, the knock sensor will think its pinging and retard the timing to compensate. This will set the code.

Have you had it analyzed at autozone did any codes get displayed?

2.0 or 3.0 L engine ? DPFE sensor . What code is stored ?

SOUND LIKE PROBLEM IS EGR VALVE FAILURE.CHECK TO SEE IF EGR VALVE IS GETTING VACUUM. IF ALL IS GOOD EGR VALVE INTAKE OR EXHAUST MANIFOLD PASSAGES ARE RESTRICTED OR THE EGR VALVE IS DEFECTIVE.

if it is for the EGR valve again, replace the valve and the DPFE sensor. Not sure what an EGR regulator is. Could be a bad hose going to the DPFE, or a clogged tube or EGR port also.

Replace the EGR valve, the code is for EGR system performance

the code you have may not be due to insufficient lift, more likely you have either high or low voltage running through egr. replace the valve and your issues should go away.

I would have the front brakes checked and from what you are telling me you may have a warped rotor I do not know how many miles are on the car some cars have a reset after the oil change has been done to turn off the check engine light but if it keeps coming on take it to autozone and they will put it on a tester for free and then you will know what needs to be done

I replaced the EGR Valve ($80 after tax), problem solved, vanruns great now. Now my problem is that I can't get the light to turn off.