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Need to look up a few codes please

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Old 11-12-2004, 11:29 AM   #1
CDH76
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Default Need to look up a few codes please

Sorry, I know I should have the link. I did have the link to the site that listed the codes but that was at my old job. Can someone tell me what these are and if they are something to worry about? Or link me.

10 PCM T0171H
10 PCM P0156H

60 IPC U1160H

Thanks
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Old 11-12-2004, 01:07 PM   #2
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10 PCM T0171H
10 PCM P0156H

60 IPC U1160H

First, they are all History codes and the condition is not currently causing these codes. There are two kinds of DTCs, "Current" and "History," designated with a letter suffix, "C" or "H". A
current code indicates that the malfunction is present in the system whose module is displaying data.
A history code indicates a problem existed in that module sometime in the last 40 or 50 ignition cycles.
When not accompanied by a current code of the same number, it is possible it's evidence of a previous
problem. Now solved, that was not removed by clearing codes. More likely is that a history code
indicates an intermittent malfunction.
But to answer your question:
PCM = Powertrain Control Module
10 PCM T0171H = ???
10 PCM P0156H = ???

60 IPC U1160H = U1160 Loss of Communications with LDCM(Left Door Control Module) On page 8-611 of my 98 service manual it states:
The IPC (Instrument Cluster Panel) sends out a State of Health (SOH) message to the Left Door Control Module (LDCM) and no SOH message response was sent back. Condition must be present for 5 seconds. ACTION TAKEN When the DTC Sets: Stores a DTC U1160 in the IPC memory, No driver warning message will be displayed. Further "...Communication DTCs do not necessarily indicate a malfunction...only intended to aid in diagnosing an itermittent communication malfunction that is accompanied by a symptom.
Conditions for Clearing the DTC:
1) This DTC requires an ignition cycle in order to change from current to history
2) The IPC receives a SOH message back from the LDCM
3) A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present
4) Use the IPC clearing DTCs feature
5) Use a scan tool

Sorry, but after searching my pdf file and my 98 service manual, I can't find the other 2 codes.

Last edited by Silver98; 11-12-2004 at 01:20 PM.
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Old 11-12-2004, 01:10 PM   #3
simpleman68
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Quote:
Originally Posted by Chad954RR
Sorry, I know I should have the link. I did have the link to the site that listed the codes but that was at my old job. Can someone tell me what these are and if they are something to worry about? Or link me.

10 PCM T0171H = T? P0171H = Fuel Trim System Lean Bank 1

10 PCM P0156H = Heated oxygen sensor

60 IPC U1160H = Loss of Comm. with left door control module

Thanks
I have gotten the U1160 and P0156 codes before and they cleared out when I fixed the main problem. Not sure why, but the DIC throws a few goofy codes out sometimes when something else is thrown.
I'm not the pro here though, just my experience and a few tuners have told me the same.
Scott
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Old 11-12-2004, 01:21 PM   #4
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Default Where did you get that info?!!!

Hey simpleman68, where did you find the P0156 code????? My manuals skip from P0155 tio P0157. Help me please?
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Old 11-12-2004, 02:46 PM   #5
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http://www.stengel.net/diccodes.htm Here is the code website!
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Old 11-12-2004, 03:00 PM   #6
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Quote:
Originally Posted by Bill Curlee
http://www.stengel.net/diccodes.htm Here is the code website!


I also found it works well if you put the code into the search box. It takes a little while to surf through all the bs, but thats how I found mine.
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Old 11-12-2004, 05:12 PM   #7
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Thanks for the info. I found out from LG that the other codes have to do with an exhaust leak.
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