Porsche P0138 HO2S12 Circuit High Voltage

Description

OBD-II Trouble Code Description for P0138 Porsche

O2 Sensor Circuit High Voltage

What does this mean?

OBD2 Code P0138 Porsche definition:
The Heated Oxygen Sensor (2) located rear of catalytic converter produces an output signal relative to oxygen storage capacity of catalytic converter. Ho2S 2 signal is less active than signal produced by front oxygen sensor. This code sets when HO2 Sensor voltage is greater than 999 mV for more than 2 minutes (time depends on model. Could be as high as 4 minutes)

Symptoms

Possible sumptoms of OBD code P0138 Porsche
There may be no noticeable symptoms except for MIL illumination. Possible high fuel pressure can over rich the system.

Causes

Possible causes of OBD code P0138 Porsche
A code P0138 Porsche may mean that one or more of the following has happened: Faulty O2 sensor Short to battery voltage in O2 sensor signal circuit High fuel pressure (not as likely)

Possible Solutions

Here are some potential solutions: Replace O2 sensor Repair short to battery voltage in o2 sensor signal circuit


The OBD2 Code Information Be Applicable For Porsche:

2013 Porsche Cayenne,2013 Porsche Boxster S,2013 Porsche Boxster,2013 Porsche 911,2012 Porsche Panamera,2012 Porsche 911,2011 Porsche 911,2010 Porsche Panamera,2010 Porsche Cayenne,2010 Porsche 911 GT3,2009 Porsche 911,2008 Porsche Cayenne,2008 Porsche Boxster,2008 Porsche 911,2007 Porsche Cayman,2007 Porsche Cayman,2007 Porsche Boxster,2007 Porsche Boxster,2007 Porsche 911,2006 Porsche 911,2005 Porsche Boxster S,2005 Porsche Boxster,2005 Porsche 911,2004 Porsche 911,2003 Porsche 911

 

Note:

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