P0121

Wiring Diagram:

Detecting Condition/Trouble Area:

DTC CONFIRMATION PROCEDURE

WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

NOTE: Check to make sure that the following conditions are satisfied when using this DTC CONFIRMATION PROCEDURE.
- Intake air temperature: between -14 °C and 70 °C (6.8 °F and 158 °F)
- Atmospheric pressure: higher than 560 mmHg (Altitude: lower than 2790 m (9150 ft))
- The following DTCs are not detected: P0101, P0102, P0103, P0116, P0117, P0118, P0122, P0123, P0335, and P1451

1. With ignition switch OFF, connect scan tool.
2. Turn ON ignition switch and clear DTC by using scan tool if any .
3. Start engine and warm up to normal operating temperature.
4. Increase vehicle till engine speed is reached 3300 - 3700 r/min. for 10 sec.
5. Stop vehicle and run engine at idle speed for 10 sec.
6. Check DTC and pending DTC by using scan tool.

Troubleshooting ( Steps 1 - 7 ):