01 Dakota with an error message P 0601

P0601 Internal Control Module Memory Check Sum Error

It could be a one-time thing, or it could be a problem with your PCM. I'd disconnect the battery for about 15 minutes (this will clear the codes), re-connect it, and see if the code comes back. If it does, you will need further diagnostics by a qualified shop. This is strictly a computer-related problem - nothing mechanical or electrical (aside from an entire PCM) that you can change out to fix it, unfortunately.

P0601 - Internal Controller Failure

Looks like you need a PCM.

On Fri, 24 Jun 2005 23:38:52 GMT, "Duh" wrote:

Don't overlook the possibility of your PCM failure being caused by = something like the engine compartment getting too hot, a cable/connector loose or has a = pushed out pin, battery voltage dropping out, etc. For example my Durango developed a = heat sensitive problem that was eventually resolved by lowering the engine compartment = temp by a number of "mods" to improve airflow and route the engine/radiator heat outside = of the vehicle as quickly as possible. My PCM was replaced also because of the = heatup/cooldown cycling that had (apparently) caused the failure to rear it's ugly code. The code = that was being set was caught at the dash computer and indicated "no bus" which means it = could not communicate with the other controllers that it normally exchanges data = with. In a valiant effort to "protect" me and the vehicle I guess, it (The PCM) also would = pick the relay that shuts down power to most of the vehicle until the "PCM" was allowed = to cool off. Just using this to illustrate that identifying the failing assembly is = (in some instances) a far cry from being a straight forward process. Good luck in= identifying and fixing your problem. I have found the factory service manual to be = extremely useful in understanding and resolving these types of issues. Just curious and I = apologize in advance if I missed it in a earlier post but what motor does your rig = have? best regards, Joe.

Joe Brophy CountryTech Computer email: snipped-for-privacy@spiretech.com