Quote:
Originally Posted by marblehead
So, as I started the car this morning to drive to a local AutoZone to have the codes pulled, the light goes OFF! What? No SES light today Guess because it's Friday!  . Nonetheless, I pulled the codes and will attach a pdf with the printout. I'm curious about the HVAC operation because when I adjust the temperature I do not get any noticable change, which one of the codes seems to support. Any thoughts on these?
I'm still baffled by the disappearance of the light. . .I thought when they threw a code the light remained on until manually cleared by a reader. . .
I also found a significant amount of debris/dirt/bugs in the air filter box, vacuumed it out and banged out the air filter while I await a new K&N to be delivered. I can't imagine this is the cause of the SES but I'm sure cleaning the area didn't hurt.
Fri l'{ay 310:43:05 2013
AutoZone
Troubleshooting P0597
0El4 Brand: BMW
? 14'18
t}efinition
66lherrnsstat heater csntrol circuit open
Explanation
d60pen sr short circuit condition
Probable cause
661.- Poor electrical connection
662.- Failed engine c00lin9 thermostat
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wish I can read codes... but that air filter clean definitely didn't help. Good luck on your troubleshooting, and let me know what the culprit is.