PO171 & PO174 ECU Codes

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Old Dec 15, 2013 | 02:57 AM
  #1  
CB7Nub's Avatar
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From: Toronto, Ontario, Canada
PO171 & PO174 ECU Codes

I got those codes about a week and a half ago one night but haven't gotten them since. I looked them up and it says that bank 1 & 2 are running lean. I have been told it could be a air leak or even a O2 sensor. Does anyone have experience or a better guess what it could be? It is for a Type-S.
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Old Dec 16, 2013 | 10:18 AM
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New Car TL-S's Avatar
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weird, i got those Saturday after idling for 15-20mins in 15° weather. pulled the battery cable and have had nothing pop yet.
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Old Dec 16, 2013 | 01:46 PM
  #3  
flyromeo3's Avatar
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From: PA/ NY/ FL
Originally Posted by New Car TL-S
weird, i got those Saturday after idling for 15-20mins in 15° weather. pulled the battery cable and have had nothing pop yet.


same here.. I got a similar code last year when I was sitting in my car idling waiting for my cousin to exit his home . ( Idled for about 20 minutes )


I cleared the code and it never came back since.
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Old Dec 19, 2013 | 06:16 PM
  #4  
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From: Berlin, Maryland
This is a recurring problem with our cars. Some say that the system is incorrectly reading the information provided from the sensors making the system throw the codes. I get them. Some say to flash the ECU but I haven't.
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Old Dec 20, 2013 | 06:05 PM
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https://acurazine.com/forums/3g-tl-2004-2008-93/3g-tl-technical-service-bulletins-tsbs-3g-garage-j-016-a-613659/

TSB 08-043

This happened to me. Both codes came on at once. SW update at the dealer under warranty. Poof, codes never came back.
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Old Feb 10, 2014 | 05:52 PM
  #6  
Detox125's Avatar
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From: Ottawa Ontario Canada
Have ecm reflashed as per tsb....had it happen to my 08 tls at...no problems since
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Old Feb 10, 2014 | 06:33 PM
  #7  
Jase13's Avatar
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Originally Posted by Vlad_Type_S
https://acurazine.com/forums/showthread.php?t=613659

TSB 08-043

This happened to me. Both codes came on at once. SW update at the dealer under warranty. Poof, codes never came back.
^That.
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