Confirmation Procedure
- CHECK DTC PRIORITY
If DTC P1148 is displayed with DTC for A/F sensor 1, first perform the confirmation procedure (trouble diagnosis) of DTC corresponding to A/F sensor 1.
Is applicable DTC detected?
YES
Refer to DTC Diagnosis Procedure .
NO
To check malfunction symptom before repair: Refer to Inspection .
NO
Confirmation after repair: INSPECTION END