Display Group 05, Field 2, Oxygen Sensor Learning Value, Partial Load 1 (Cyls. 1-3)
- Displayed value should be -19 to +19 percent. If learning values are greater than specified, check for intake air leak, plugged injector, faulty Mass Airflow (MAF) sensor or low fuel pressure.
- If learning values are less than specified, check for fuel-contaminated (diluted) engine oil, leaking injectors or high fuel pressure. Check for faulty EVAP control solenoid valve, MAF sensor, Oxygen Sensor (O2S) or O2S heater. Check for leak between exhaust manifold and cylinder head.