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Codes Question

Old Sep 8, 2008 | 11:52 AM
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From: Sachse TX
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I have the following codes and their description. Anyone have any ideas where to start with this problem?


U1016 Loss Of Communication with PCM (No SOH Message Received -RFA

U1064 Loss Of Communication with DCM (No SOH Message Received -RFA

U1096 Loss Of Communication with IPC (No SOH Message Received -RFA
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Old Sep 8, 2008 | 01:10 PM
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Originally Posted by FreakC
I have the following codes and their description. Anyone have any ideas where to start with this problem?


U1016 Loss Of Communication with PCM (No SOH Message Received -RFA

U1064 Loss Of Communication with DCM (No SOH Message Received -RFA

U1096 Loss Of Communication with IPC (No SOH Message Received -RFA
Are they historical or current? What problems are you experiencing?
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Old Sep 8, 2008 | 01:19 PM
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From: Sachse TX
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Originally Posted by lucky131969
Are they historical or current? What problems are you experiencing?
These are current. I just put my car back to stock (has been on stands for a few months) and cleared all of the codes. After a little bit of driving, this is what popped up. I'm not experiencing any other problems. The only other issue it has is the steering lock column message, but that isn't what is throwing the codes.
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Old Sep 8, 2008 | 02:06 PM
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They really do not mean much unless other things are happening as well. The code just means the one of the periodic SOH messages that are passed between two modules was missed at a point in time. Since there are multiple messages sent between modules it normally doesn't mean anything because some of them got through. The messages can be missed because of bus activity or electrical interference from an outside source.

Bill
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Old Sep 8, 2008 | 05:29 PM
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Originally Posted by Bill Dearborn
They really do not mean much unless other things are happening as well. The code just means the one of the periodic SOH messages that are passed between two modules was missed at a point in time. Since there are multiple messages sent between modules it normally doesn't mean anything because some of them got through. The messages can be missed because of bus activity or electrical interference from an outside source.

Bill
Unless you are experiencing actual problems of some sort related to the RFA system, these can be ignored and are just a nuisance more than anything. I've had these same three codes pop up over the years many times since I bought my car. My codes usually show an "H" (history) at the end of the number. These in particular are not uncommon.

HTH
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