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Old 10-11-2007, 05:17 PM   #1
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I have a 95 bonneville and have code PO 131 anyone know what this code is, and what could be causing it? Thanks!!!
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Old 10-11-2007, 05:23 PM   #2
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I searched it and got:
P0131 is Heated oxygen circuit ( Low Signal Voltage )

How old is your O2 sensor?
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Old 10-11-2007, 05:24 PM   #3
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Hmmmm, for some unexplainable reason the code listings for 1994, 1995, and 1996'* are missing from our TECHINFO, but, since they are similar to other OBD systems, it is likely this:

DTC P0131 HO2S Circuit Low Voltage Sensor 1
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Old 10-11-2007, 05:38 PM   #4
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I too didnt see it in "techinfo" Anybody know the cause of this code? Thanks in advance!!! O just replaced the o2 sensor and its still blowing this code.
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Old 10-11-2007, 09:12 PM   #5
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Quote:
Originally Posted by Golfvette
I too didnt see it in "techinfo" Anybody know the cause of this code? Thanks in advance!!! O just replaced the o2 sensor and its still blowing this code.
Did you reset/ clear the code from the PCM?
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Old 10-11-2007, 10:13 PM   #6
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yes I cleared the computer
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Old 10-12-2007, 01:14 AM   #7
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This is the diagnostic information for that code. Unfortunately, most of it requires a scan tool. It'* for a 2003, but should be similar, if not identical, with the cause and diagnostics. P0131
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