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Have a hard code of p0403 cant get rid of it. Edge wont clear it, dealer cant clear it, cleaned egr valve and still there. EGR plugged in. Have not run truck without it plugged in. Do have H&S dpf delete. Dealer says might be computer problem!! only have 80000miles on 6.7. Please Help!!
That code is from no Control circuit. Meaning it is not sensing the motor itself.
Pins 6,7,8 are for the motor unit. If you can meter them and see resistance, check the pins on the connector for possibly pushing back into the connector housing.
Dealer didnt tell me ecm was under cummins warranty! Is it supposed to be? Should be covered for 100000miles if it is right? And no dealer has been very good about performance upgrades and hasnt voided warranty.
Don't know if this will help or not. When I initially unplugged my EGR I got the standard p0405 code that I expected and nothing else. No updates or flashes since then but I did complete the DPF delete a couple of weeks ago. The truck is running great but decided to check codes to see if everything was still good and noticed that I had p0403, p0404, and p0405. Cleared and all came back. Cleared again and plugged back in the EGR and no CEL. Unplugged again and immediately all 3 codes return. Any thoughts?
2007.5 Mega Cab 4x2 w/6 sp manual - Smarty Jr and my stock exhaust fell off...
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