Ok techs...searchin' for some help....MIL is on again...2 codes pulled....
P2000, and P0489....

Had the P2000 before has something to do with exhaust....not too concerned...dodge is still workin' out the kinks with the damn dpf...

what is the other one???

Thanks in advance,
Darryn

 

I dont know if this helps much but this is what I have.


P0489 Exhaust Gas Recirculation Ctrl Circ Low
P0490 Exhaust Gas Recirculation Ctrl Circ Hi

 

So another one related to the exhaust system...not a worry...will get it in eventually to have the dealership look at it..

Just wanted to make sure it wasn't something major as I'm going to put on about 1500 miles over the early part of next week...headed back to upstate NY to visit Mom for Christmas...

Thanks ga_noplugs.

 

P0489

Theory of Operation
There are two portions to this diagnostic: 1. The diagnostic monitors motor effort as a measure of current. When the valve is opening to a position, and uses too much motor effort to achieve that position the diagnostic will fail. This will most likely occur in a situation when the valve is stuck. 2. At every key on, the valve tries to recalibrate it's position. The valve shaft will move until it comes into contact with the valve. If the distance the valve shaft must move is different by a calibrated amount than the original learned movement then the diagnostic fails. This will most likely occur if the valve is stuck in an open position. The valve will perform this autozero function at every key on and every time the valve is commanded closed throughout the engine operating cycle. The ECM will illuminate the MIL lamp after the diagnostic runs and fails in two consecutive drive cycles. The ECM will also turn on the ETC lamp. During this time the ECM will not longer control the EGR valve. The MIL lamp will turn off once the diagnostic runs and passes in 4 consecutive drive cycles.


Diagnostic Test
1. DTC P0489 ACTIVE

[hr]


Ignition on, engine not running.
With the scan tool, read DTC's.

Is DTC P0489 active?

Yes
[ul][*]Replace EGR valve[/ul]
Hope this helps.....

 

Thanks Parts....

I knew you'd come through...trucks running fine so not too concerned...but will definately get it in for service.