Description
OBD-II Trouble Code Description for P0166 Hyundai
O2 Sensor Circuit No Activity Detected
What does this mean?
OBD2 Code P0166 Hyundai 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 Hyundai
– Engine Light ON (or Service Engine Soon Warning Light) – High Fuel Consumption – Excessive Smoke from Exhaust
Causes
Possible causes of OBD code P0166 Hyundai
– 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 Hyundai:
2013 Hyundai i30,2013 Hyundai i20,2013 Hyundai Santa Fe,2013 Hyundai Langdong,2013 Hyundai HB20X,2013 Hyundai HB20S,2013 Hyundai HB20,2012 Hyundai i40,2011 Hyundai ix35,2011 Hyundai ix20,2011 Hyundai i10,2011 Hyundai Verna,2011 Hyundai Sonata,2011 Hyundai Azera,2011 Hyundai Avante,2010 Hyundai Accent,2009 Hyundai ix55,2009 Hyundai i20,2009 Hyundai Sonata,2008 Hyundai i800,2008 Hyundai i30,2008 Hyundai i10,2007 Hyundai Veracruz,2007 Hyundai Elantra,2007 Hyundai Coupe,2006 Hyundai Getz,2005 Hyundai Tucson,2005 Hyundai Trajet,2005 Hyundai Terracan,2005 Hyundai Sonata,2005 Hyundai Santa Fe,2005 Hyundai Portico Concept,2005 Hyundai Matrix,2005 Hyundai HED 1 Concept,2005 Hyundai Grandeur,2005 Hyundai Getz,2005 Hyundai Coupe,2004 Hyundai HCD8 Concept,2004 Hyundai Elantra,2004 Hyundai E-Cubed Concept,2004 Hyundai Atos Prime,2004 Hyundai Accent,2003 Hyundai CCS Concept,2002 Hyundai HCD 7 Concept,2001 Hyundai HCD 6 Concept
Note:
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