This code is seen when the Engine Control Module (ECM) tries to control the heater control circuit for Bank 2 Sensor 1 and finds high voltage present. If the code returns, perform a visual inspection of all wiring and connectors in the circuit, to rule them out. : The most common symptom is only the Check Engine Light being observed by the driver. In the chance that poor fuel economy or rough engine running is noticed, care should be taken when driving to ensure safety until the code can be diagnosed and repaired. PartsAvatar Auto Parts, Canada offers certified mechanics to diagnose and repair your vehicle. So if you are facing any issue, please contact us, we will be happy to fix your issue.