DTC P2195: General Description
When the rear air/fuel ratio (A/F) sensor (bank 1, sensor 1) is properly connected to the engine wire harness, but it is not installed in the exhaust pipe, the feedback is not done properly even if the rear A/F sensor (bank 1, sensor 1) is active after starting the engine. Thus, the exhaust emissions increase. When the rear A/F sensor (bank 1, sensor 1) output stays out of the normal range after the rear A/F sensor (bank 1, sensor 1) becomes active, the powertrain control module (PCM) detects that the rear A/F sensor (bank 1, sensor 1) is not properly installed and stores a DTC.