Description
OBD-II Trouble Code Description for P0166 Peugeot
O2 Sensor Circuit No Activity Detected
What does this mean?
OBD2 Code P0166 Peugeot definition:
The rear heated oxygen sensor (or sensor 3 for some vehicles), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the heated oxygen sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 3. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 3 is not used for engine control operation.
Symptoms
Possible sumptoms of OBD code P0166 Peugeot
– Engine Light ON (or Service Engine Soon Warning Light) – High Fuel Consumption – Excessive Smoke from Exhaust
Causes
Possible causes of OBD code P0166 Peugeot
– Harness or connectors (The sensor circuit is open or shorted) – Rear heated oxygen sensor (Bank 2) may be faulty The Error code is generally activated on detection of the following conditions: Current amperage in the rear heated oxygen sensor heater circuit is out of the normal range. (An improper voltage drop signal is sent to ECM through the rear heated oxygen sensor heater
The OBD2 Code Information Be Applicable For Peugeot:
2013 Peugeot 508,2013 Peugeot 4008,2013 Peugeot 308,2013 Peugeot 208,2013 Peugeot 107,2012 Peugeot 308,2012 Peugeot 208,2011 Peugeot 508,2011 Peugeot 408,2011 Peugeot 308,2010 Peugeot 207,2010 Peugeot 207,2009 Peugeot 407,2009 Peugeot 308,2009 Peugeot 206,2009 Peugeot 107,2008 Peugeot 308,2008 Peugeot 207,2007 Peugeot 308,2007 Peugeot 207,2006 Peugeot 407,2006 Peugeot 207,2006 Peugeot 206,2005 Peugeot 407,2005 Peugeot 307,2005 Peugeot 206,2005 Peugeot 107,2005 Peugeot 1007,2004 Peugeot 607,2004 Peugeot 407,2004 Peugeot 206,2003 Peugeot 307,2003 Peugeot 206
Note:
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