P0489-egr Control Circuit Low

[Dave Flomerfelt]

I have a 2007 6.7, Cummins with 110k miles, it runs good but keeps getting this code P0489-egr Control Circuit Low. A local mechanic he said it might be carbon in the catalytic converter and suggested running it hard to maybe blow out the carbon, which I have tried with no improvement. In general it has always run clean no smoke from exhaust. Also occasionally get P2089 another egr issue. I picked up a Haynes manual but it was not much help

 

[Fuel35 67]

Take the egr off the intake horn and clean it with Purple Power. That should take care of the P0489.


P2089 is for a gas engine from what I’m coming up with. Are you sure that’s the code?

 

[GTyankee]

I just looked at a DIESEL website

P2088: A CAMSHAFT POS ACTUATOR CTRL CIRC LOW BANK1
P2089: A CAMSHAFT POS ACTUATOR CTRL CIRC HI BANK1
P208A: (DIESEL EXHAUST FLUID) REDUCTANT PUMP CONTROL CIRCUIT OPEN
P208C: (DIESEL EXHAUST FLUID) REDUCTANT PUMP CONTROL CIRCUIT LOW
P208D: (DIESEL EXHAUST FLUID) REDUCTANT PUMP CONTROL CIRCUIT HIGH
P2090: B CAMSHAFT POS ACTUATOR CTRL CIRC LOW BANK1 C)

 

[Fuel35 67]

Out diesel 6.7’s do not have a cam control. That’s for gas engines. We have a cam shaft sensor, but no variable valve timing.

 

[Dave Flomerfelt]

Thank you Fuel 35-67 for your idea, now I just have to figure out how to do it.