P2099 – Post Catalyst Fuel Trim System Too Rich Bank 2

 

P2099: DIY Repairing Video Tutorial

https://youtu.be/tZdHNVnheeA

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P2099 Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light)  

P2099 Possible Causes

  Faulty Heated Oxygen Sensor,Heated Oxygen Sensor harness is open or shorted,Heated Oxygen Sensor circuit poor electrical connection,Exhaust leaks,Contaminated Heated Oxygen Sensor  

P2099 Description

  The Powertrain Control Module (PCM) monitors the correction value from downstream Heated Oxygen Sensor (HO2S) as part of the fore-aft oxygen sensor control routine. The test fails when correction value is greater than a calibrated limit.