DTC P2195 A/F/O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1: Notes
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
CAUTION:
- After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode .
- Use the check board when measuring the ECM terminal voltage and resistance.
Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .
- CHECK FRONT OXYGEN (A/F) SENSOR CONNECTOR AND COUPLING CONNECTOR.
Has water entered the connector?
- Yes : Completely remove any water inside.
- No : Go to 2.
- CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.
- Turn the ignition switch to OFF.
- Disconnect the connectors from front oxygen (A/F) sensor.
- Disconnect the connector from ECM.
- Measure the resistance of harness between ECM and front oxygen (A/F) sensor connector.
Connector & terminal
(E158) No. 15 - (E24) No. 1:
(E158) No. 27 - (E24) No. 4:
(E158) No. 39 - (E24) No. 5:
Is the resistance less than 1 Ω?
- Yes : Go to 3.
- No
: repair the harness and connector.NOTE: In this case, repair the following item:
- Open circuit in harness between ECM and front oxygen (A/F) sensor connector
- Poor contact of coupling connector
- CHECK FOR POOR CONTACT.
Check for poor contact of the front oxygen (A/F) sensor connector.
Is there poor contact of front oxygen (A/F) sensor connector?
- Yes : Repair the poor contact of front oxygen (A/F) sensor connector.
- No : Replace the front oxygen (A/F) sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Front Oxygen (A/F) Sensor .