CODE TRANSLATION

[jer]

Can someone please translate the following codes from my '98 DeVille?

PCM P0603

ACM B1348

My Low Refrigerant-A/C Off warning came up on the information center; the dealer serviced the A/C system, kept the car overnight and I picked it up last night. This afternoon, the message appeared again. Any suggestions?

Many thanks,

Jer

[JasonA]

PCM P0603 is PCM memory reset (did you recently change the battery?). Perhaps the dealership disconnected the battery during the A/C recharge. If the system is reporting the refrigerant is low, there's really only two causes (that I can think of). 1) it really is low...meaning there's a leak in the system, or 2) the sensor is bad. Either way, I'd take it back to the dealership. They can perform a leak test on it. Why was the car in for service in the first place? Did you get a low refrigerant warning to prompt the dealer A/C service in the first place? They may not have leak-tested it and just filled it up, only to have the refrigerant leak back out.

[jer]

Thanks for the quick reply.

I had it in for servicing since the message appeared. I told the dealer the first time that the message appeared Low Refrigerant and they called to tell me the Cooling System was fine. The second time they charged me $89. to service the A/C system, kept the car overnight and then the message reappeared with 18 hours of picking up the car.

[JasonA]

The second time they charged me $89. to service the A/C system, kept the car overnight and then the message reappeared with 18 hours of picking up the car.

That tells me there's a leak in the system and more refrigerant is just going to leak back out. I'd have them to a leak test and fix what the problem is -- or I think anything else you put in there is just going to leak back out.