P0171

DTC P0171 / P0172: System Too Lean / Rich

DTC Detecting Condition And Trouble Area:

DTC Detecting Condition and 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 tester, on a level road.

NOTE:
Check to make sure that the following conditions are satisfied when using this "DTC Confirmation Procedure".
- Intake air temp.: between -10 °C and 60 °C (14 °F and 140 °F)
- Altitude (barometric pressure): 2500 m, 8202 ft or less (560 mmHg, 75 kPa or more)

1. With ignition switch turned OFF, connect scan tool.
2. Turn ON ignition switch and clear DTC using scan tool.
3. Start engine and warm up to normal operating temperature.
4. Increase vehicle speed till engine speed is higher than 1500 r/min.
5. Operate vehicle within freeze frame data condition as noted for 5 min.
6. Stop vehicle and check DTC and pending DTC.

Step 1-9:

DTC Troubleshooting