P0266 is set when Cylinder #2 Individual A/F deviation is greater than threshold value.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Air/Fuel Ratio Monitoring. | 1. Poor Connector Connection 2. Air leak on Cylinder #2 3. Defected Injector #2 |
Enable Conditions |
•
Engine Coolant Temp. higher than 163.4℉(73℃).
•
Catalyst Temp. Model lower than 1652℉(900℃).
•
Engine speed higher than 1088 RPM and lower than 3008 RPM.
•
Fuel mass set-point more than 0.024 g/rev and less than 0.061 g/rev.
•
Canister load less than 0.3.
•
Lambda control active and lambda set-point = 1.
•
Stable driving condition.
•
120 sec. after engine start.
•
Catalyst heating not active.
•
Fuelcut off not active.
•
Catalyst purge after fuel cut off not active.
•
No misfire detected. | |
Threshold value |
•
Lambda deviation more than 15% or less than -15%. | |
Diagnosis Time |
•
Continuous. | |
MIL On Condition |
•
2 Driving Cycle. |
