DTC P013C: O2 Sensor Slow Response - Rich To Lean Bank 2 Sensor 2: Notes
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
- After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (H6DO)>CLEAR MEMORY MODE>OPERATION ., and inspection mode Ref. to ENGINE (DIAGNOSTICS) (H6DO)>INSPECTION MODE>PROCEDURE .
- 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 HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR.
- Turn the ignition switch to OFF.
- Disconnect the connector from ECM.
- Disconnect the connector from rear oxygen sensor.
- Measure the resistance of harness between ECM connector and rear oxygen sensor connector.
Connector & terminal
(E158) No. 59 - (E25) No. 3:
Is the resistance less than 1 Ω?
Yes Go to 2 .
No Repair the harness and connector.
NOTE: In this case, repair the following item:- Open circuit in harness between ECM connector and rear oxygen sensor connector
- Poor contact of coupling connector
- CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR.
Measure the resistance between rear oxygen sensor connector and chassis ground.
Connector & terminal
(E25) No. 3 - Chassis ground:
Is the resistance 1 MΩ or more?
Yes Go to 3 .
No Repair the short circuit to ground in harness between ECM connector and rear oxygen sensor connector.
- CHECK REAR OXYGEN SENSOR.
Measure the resistance between rear oxygen sensor terminals.
Terminals
No. 3 - No. 4:
Is the resistance less than 1 Ω?
Replace the rear oxygen sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H6DO)>REAR OXYGEN SENSOR .
Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.