Codes setting

[drice]

I don't know where to find the definitions for these



P0602ECM comm error



P0480 cooling fan





I'm assuming the second one is fan clutch



but what is the frist one and what does it mean

 

[rbattelle]

P0602 - Checksum Error

Set Condition: A deviation betwen the ECM memory and a stored calibration.



The only fix is to reflash the ECM. If the flash is unsuccessful, replace the ECM.



I'd say you've got a toasted ECM.



-Ryan

 

[drice]

how am I gonna explain this to the dodge house that just replaced one for me last week? what could be toasting them??? :{



for the record

for the last year until wed I was running a Dr. P 40% box

wed I pulled it and downloaded the power pup and

on thursday I installed a TS performance box

 

[rbattelle]

how am I gonna explain this to the dodge house that just replaced one for me last week? what could be toasting them??? :{



for the record

for the last year until wed I was running a Dr. P 40% box

wed I pulled it and downloaded the power pup and

on thursday I installed a TS performance box

If I had to guess - and this is only a guess - you've got a short in the system somewhere, perhaps introduced when you installed your aftermarket boxes. If you continue to replace ECMs without resolving the problem, of course they're going to keep blowing on you. I can't say what the dealer might do, and I won't argue or offer any opinions on whether you should tell them about the performance boxes.



Sorry you've had so much ECM trouble. The ECM comes directly from Cummins and is usually quite bulletproof.



-Ryan