DTC P2196: A/F / O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 [11/2021 - ]: Procedure

1. Turn the ignition switch to OFF.
2. Check the air fuel ratio sensor connector.

   Has water entered the connector?

   Result	Proceed to
   Yes (Completely remove any water inside.)	A
   No	B

Result: 

A 

COMPLETELY REMOVE ANY WATER INSIDE 

Result: 

B 

See step  2

1. Disconnect the connector from ECM.
2. Disconnect the connector from the air fuel ratio sensor.
3. Measure the resistance of harness between ECM connector and air fuel ratio sensor connector.

   Connector & terminal

   B1-3 (AFR+) - B13-3

   B1-4 (AFR-) - B13-4

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit of harness between ECM connector and air fuel ratio sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  3

1. Check for poor contact of the air fuel ratio sensor connector.

   Is there poor contact of air fuel ratio sensor connector?

   Result	Proceed to
   Yes (Repair the poor contact of air fuel ratio sensor connector.)	A
   No (Replace the air fuel ratio sensor.)	B

Result: 

A 

REPAIR CONNECTOR 

Result: 

B 

REPLACE AIR FUEL RATIO SENSOR. Refer to  REMOVAL [11/2021 - ]