Mini P0162 O2 Sensor Circuit Malfunction Bank 2 Sensor 3

Description

OBD-II Trouble Code Description for P0162 Mini

O2 Sensor Circuit

What does this mean?

OBD2 Code P0162 Mini definition:
The O2 (oxygen) sensors measure oxygen content in the exhaust, whether rich or lean. The PCM (powertrain control module) then uses this information to regulate fuel injector pulse in order to keep the proper air:fuel ratio. The O2 sensors are very important for the proper operation of the engine. Fouled or faulty O2 sensors can cause the PCM to add or take away fuel based on the faulty O2 sensor data which can cause a false lean or rich condition. A P0162 Mini code definition:the Bank 2,3 O2 sensor, or the third sensor downstream (post-cat) on Bank 2. It is a four wire sensor. The PCM supplies a ground circuit and a reference voltage circuit of about 0.5 volts or half a volt. Also for the O2 sensor heater element there is a battery voltage supply wire (usually from the power distribution center) and another ground circuit for that. The O2 sensor heater allows the O2 sensor to warm up faster, thus achieving closed loop in less time than it would normally take for the exhaust to warm the sensor up to operating temperature. This creates less exhaust emissions at cold startup. The O2 sensor varies the supplied reference voltage based on oxygen content in the exhaust. It is capable of varying from about 0.1 to 0.9 volts, 0.1 V indicating lean exhaust and 0.9 V indicating rich exhaust. This P0162 Mini code indicates that the Bank 2, 3 O2 sensor is stuck low for too long or is inactive.

Symptoms

Possible sumptoms of OBD code P0162 Mini
Often post-cat O2 sensor problems present few drivability issues since they are inputs to the PCM to monitor catalytic converter quality and don’t directly control fuel. Sometimes no symptoms are noticeable. However the following may be possible on some vehicles: MIL (Malfunction Indicator Lamp) illumination Decrease in MPG Increase in tailpipe emissions

Causes

Possible causes of OBD code P0162 Mini
Potential causes of a P0162 Mini code include: Bad O2 sensor Signal shorted to voltage Wiring problems due to contact with exhaust components Holes in exhaust near O2 sensor

Possible Solutions

Warm the engine up to normal operating temperature. Using your scan tool’s live datastream, check the signal voltage for the Bank 2,3 O2 sensor at idle. Is it stuck low and not switching? If so, increase engine RPMs for a minute or so and observe if the sensor begins switching or changing voltage. If it does after a period of elevated idle, check under the vehicle for rusty exhaust components or holes in the exhaust near the O2 sensor(s). Repair as necessary. If the exhaust is intact, then suspect a sluggish Bank 2,3 O2 sensor and replace it. If you observe that the O2 sensor remains low on the datastream, then unplug it and observe the reading. It should now be showing reference voltage, or half a volt (0.5 v). If it does, check for connector problems, water intrusion, damage to the sensor, etc. If all is okay, replace the faulty Bank 2,3 O2 sensor. If the voltage reading is still low after unplugging the O2 sensor, then suspect a problem with the wiring. Visually inspect the wiring harness making sure that there is no contact with hot exhaust components and that all the harness retainers are in place. Repair as necessary If no wiring harness issues exist, use a voltmeter to check for reference voltage from the PCM at the unplugged connector. It should be reading reference voltage, or about half a volt (0.5v). If voltage reading is too high, repair the short to voltage on the signal circuit.


The OBD2 Code Information Be Applicable For Mini:

2013 Mini Vision Concept,2013 Mini Roadster,2013 Mini Cooper,2013 Mini Countryman,2013 Mini Clubvan Camper,2013 Mini Clubvan,2013 Mini Clubman Bond Street,2012 Mini Rocketman Concept,2012 Mini Coupe,2012 Mini Clubvan Concept,2012 Mini Bayswater,2012 Mini Baker Street,2011 Mini WRC,2010 Mini Scooter,2009 Mini Cooper,2008 Mini One,2008 Mini Cooper,2008 Mini Clubman,2007 Mini Cooper,2006 Mini Concept,2005 Mini Cooper,2004 Mini XXL,2004 Mini Cooper,2002 Mini Cooper,2000 Mini Seven,2000 Mini Cooper

 

Note:

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